MOTS-C lab tests

597 certificates of analysis for MOTS-C are on file — 595 for single vials and 2 for blends and other forms — from 263 shops and 24 labs. The latest was tested on 8 Oct 2026.

These are certificates shops have chosen to publish, verified for authenticity before listing. Because shops decide which COAs to make public, the set reflects the batches they published rather than every production batch — a selection bias we state openly. What shop COAs show →

Tests on file

597

595 single vials · 2 blends & other forms

Median purity

99.51%

usual 99.02–99.87% · shop COAs

Measured vs label

106%

median · 11 under 90% · 59 over 120%

Latest test

8 Oct 2026

24 labs · 263 shops

Look up your vial's lot →MOTS-C prices →MOTS-C calculator Get a vial tested

What MOTS-C results look like

single vials only · 593 purity results · 586 measured-content results

Purity is tightly bunched: the middle 80% of results sit within 0.9 points. Measured content spreads across 22 points of the label.

HPLC purity

99.02–99.87%middle 80% of results

median 99.51%94% at 99% or higher7 under 98%

% HPLC purity

Measured content vs label

98–120%middle 80% of results

median 106%11 under 90%59 over 120%

% of the labelled amount

outside the usual rangeEndotoxin reported on 145 of 595 (24%)Confirmed on the lab's own portal: 170 (29%)Most tested size: 10 mg (392), then 40 mg (125) and 20 mg (42)

Latest MOTS-C tests

10 most recent · all formsAll 597 ↓

Latest MOTS-C lab tests
Tested	Shop	Lab	Purity	Measured vs label	Endotoxin	Record
8 Oct 2026	Werhner Lab	Analiza Białek	99.00%	9.86 / 10 mg 99% of label	—	View record →
6 Oct 2026	BatchTest Labs Peptides	Uzorak	98.53%	44.35 / 40 mg 111% of label	—	MS40-20260929-02✓
6 Oct 2026	SF Bay Area Peptides	freedomdiagnosticstesting.com	99.67%	12.27 / 10 mg 123% of label	—	18523✓
28 Sep 2026	ThePeptide	SideChain Analytics	99.50%	12.97 / 10 mg 130% of label	—	View record →
24 Sep 2026	Peptide.Express	freedomdiagnosticstesting.com	99.19%	9.16 / 10 mg 92% of label	—	PX-L916
23 Sep 2026	ThePeptide	SideChain Analytics	—	not reported	Reported	ENDO-MOTS-207_D
21 Sep 2026	DNA Peptides	SideChain Analytics	99.70%	9.99 / 10 mg 100% of label	—	DNA-MOTSC10-2609-01✓
17 Sep 2026	Humatide Peptides	ILS Laboratories	99.34%	42.11 / 40 mg 105% of label	—	H40MOTS100126
10 Sep 2026	Vistara Labs	SideChain Analytics	99.70%	49.77 / 40 mg 124% of label	—	View record →
10 Sep 2026	Vistara Labs	SideChain Analytics	99.60%	13.48 / 10 mg 135% of label	—	View record →

98% or higher95–98%90–95%under 90%✓ found on the lab's own portalHover an endotoxin chip for the lab's exact wording

Results by lab

single vials · labs with the most MOTS-C tests

MOTS-C single-vial results by testing lab
Lab	Tests	Median purity	Median measured vs label	Endotoxin reported	Confirmed on lab portal
freedomdiagnosticstesting.com	226	99.50%	108%	61	71
Janoshik Labs	117	99.49%	111%	0	23
Kovera Labs	44	99.72%	108%	36	36
Vanguard Laboratory	36	99.27%	103%	10	1
ILS Laboratories	28	99.75%	105%	2	24
Chromate	22	99.50%	110%	7	4
Bioviridian	16	99.81%	103%	5	3
Horizon Analytical	13	99.36%	102%	0	0

Differences reflect the vials each lab received and how it reports — this is not a ranking of labs. Every lab with a MOTS-C test on file is linked under More on MOTS-C.

What MOTS-c testing has to rule out: salt form, oxidation and truncation

MOTS-c is a 16-residue mitochondrial-derived peptide, Met-Arg-Trp-Gln-Glu-Met-Gly-Tyr-Ile-Phe-Tyr-Pro-Arg-Lys-Leu-Arg (MRWQEMGYIFYPRKLR), CAS 1627580-64-6, encoded inside MT-RNR1 rather than the nuclear genome. Neither of its two characteristic failure modes is a substitution: the right molecule at an unstated mass, or the right molecule with oxygen added to it. Both pass HPLC.

MOTS-c ships at three different molecular weights depending on salt form: 2,174.6 free base, 2,234.64 acetate and 2,288.6 TFA salt. The spread is 114 Da, more than 5% of the mass being weighed, so a vial labelled 10 mg of TFA salt contains roughly 9.5 mg of peptide. That is chemistry rather than a defect; it becomes a defect when the certificate does not say which form was weighed, and the error is silent — a missing salt line does not make a certificate look incomplete or lower its purity figure. Net content stacks with it, because both errors move in the same direction: less peptide than the label implies.

The sequence carries methionine at positions 1 and 6. Methionine oxidises readily, each oxidation event adds 16 Da, and oxidised MOTS-c can still show high HPLC purity while being a different molecule from the one in the mouse studies. A 16-residue peptide also has fifteen places to come up short, and a truncated product still elutes as a clean peak.

The salt form — free base, acetate or TFA — named on the certificate and consistent with the mass-spectrometry result. It is the check most commonly missing.
A batch-matched mass spectrum confirming the full 16-mer at 2,174.6 Da free base, read against the declared salt form. A lower mass suggests truncation.
No peaks heavier than expected by 16 Da per oxidation event (methionine 1, methionine 6, or both), plus an answer on cold-chain handling and shipping conditions: storage matters more for this sequence than for most peptides.
Endotoxin (LAL) on the batch: FDA's published concern about this substance is specifically immunogenicity risk from aggregates and peptide-related impurities.

All MOTS-C tests

599 records · 2 supplier-provided, listed and left out of the benchmarks · page 1 of 2 · newest first · blends tagged

Records 1–300 of 599 · 2 supplier-provided, listed and left out of the benchmarks, most recent first.
Tested	Shop	Lab	Purity	Measured vs label	Endotoxin	Record
8 Oct 2026	Werhner Lab	Analiza Białek	99.00%	9.86 / 10 mg 99% of label	—	View record →
6 Oct 2026	BatchTest Labs Peptides	Uzorak	98.53%	44.35 / 40 mg 111% of label	—	MS40-20260929-02✓
6 Oct 2026	SF Bay Area Peptides	freedomdiagnosticstesting.com	99.67%	12.27 / 10 mg 123% of label	—	18523✓
28 Sep 2026	ThePeptide	SideChain Analytics	99.50%	12.97 / 10 mg 130% of label	—	View record →
24 Sep 2026	Peptide.Express	freedomdiagnosticstesting.com	99.19%	9.16 / 10 mg 92% of label	—	PX-L916
23 Sep 2026	ThePeptide	SideChain Analytics	—	not reported	Reported	ENDO-MOTS-207_D
21 Sep 2026	DNA Peptides	SideChain Analytics	99.70%	9.99 / 10 mg 100% of label	—	DNA-MOTSC10-2609-01✓
17 Sep 2026	Humatide Peptides	ILS Laboratories	99.34%	42.11 / 40 mg 105% of label	—	H40MOTS100126
10 Sep 2026	Vistara Labs	SideChain Analytics	99.70%	49.77 / 40 mg 124% of label	—	View record →
10 Sep 2026	Vistara Labs	SideChain Analytics	99.60%	13.48 / 10 mg 135% of label	—	View record →
8 Sep 2026	Purely Peptides	Bioviridian	99.84%	10.74 / 10 mg 107% of label	—	MOT-20260828-01✓
4 Sep 2026	NWF Bio Peptides	Janoshik Labs	99.29%	17.02 / 15 mg 113% of label	—	MS15/2026-9-5✓
2 Sep 2026	Luv Aminos	freedomdiagnosticstesting.com	99.44%	10.78 / 10 mg 108% of label	—	MOTSC-10-001✓
2 Sep 2026	PeptuviaSupplier-provided	freedomdiagnosticstesting.com	99.55%	9.38 / 10 mg 94% of label	Pass	2026082310✓
31 Aug 2026	HMM Peptide	Janoshik Labs	—	not reported	—	View record →
30 Aug 2026	Veratis Bio Peptides	freedomdiagnosticstesting.com	99.68%	12.66 / 10 mg 127% of label	Pass	MOTS0001✓
30 Aug 2026	Backroad Aminos	freedomdiagnosticstesting.com	99.56%	41.35 / 40 mg 103% of label	Pass	082326MS40✓
25 Aug 2026	Peptuvia	freedomdiagnosticstesting.com	99.38%	38.78 / 40 mg 97% of label	—	View record →
21 Aug 2026	Alchemy Gold Research	Janoshik Labs	98.27%	10.3 / 10 mg 103% of label	—	0000001✓
19 Aug 2026	Coastal Peptides	Kovera Labs	99.88%	10.76 / 10 mg 108% of label	—	MOTS10-0826A✓
19 Aug 2026	Peptide Plugs	freedomdiagnosticstesting.com	99.88%	11.09 / 10 mg 111% of label	Pass	03510L-DK✓
19 Aug 2026	Phase One Labz	ILS Laboratories	99.77%	42.86 / 40 mg 107% of label	—	P1-40MTC06✓
19 Aug 2026	High Tide Compounds	Kovera Labs	99.70%	9.87 / 10 mg 99% of label	Pass	MS10-004✓
19 Aug 2026	High Tide Compounds	Kovera Labs	99.86%	9.19 / 10 mg 92% of label	Pass	MS10-005✓
17 Aug 2026	NovaForge Labs	freedomdiagnosticstesting.com	99.86%	22.95 / 20 mg 115% of label	—	NFL-0001✓
8 Aug 2026	TriVial BioWorks	Kovera Labs	99.45%	10.88 / 10 mg 109% of label	Pass	MC10-0728✓
7 Aug 2026	Elyria Bio	ILS Laboratories	99.83%	20.84 / 20 mg 104% of label	—	050550✓
6 Aug 2026	High Tide Compounds	Kovera Labs	99.56%	42.85 / 40 mg 107% of label	Pass	MS40-001✓
4 Aug 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.52%	40.89 / 40 mg 102% of label	—	MOTSC40-RP02✓
3 Aug 2026	BioEdge Research Labs	Kovera Labs	99.44%	44.21 / 40 mg 111% of label	Pass	061826MOTS40✓
3 Aug 2026	BioEdge Research Labs	Kovera Labs	99.67%	10.36 / 10 mg 104% of label	Pass	062026MOTS10✓
31 Jul 2026	PeptuviaSupplier-provided	Janoshik Labs	98.86%	11.71 / 10 mg 117% of label	—	PGB-MOTS-4✓
31 Jul 2026	Regenerative Research Peptides	ILS Laboratories	99.87%	41.18 / 40 mg 103% of label	—	396004✓
31 Jul 2026	River City Aminos	Vanguard Laboratory	99.40%	11.34 / 10 mg 113% of label	—	RCA-MOT10-72601
30 Jul 2026	Glow Aminos	ILS Laboratories	99.71%	10.27 / 10 mg 103% of label	—	GL-010231✓
28 Jul 2026	Backroad Aminos	Kovera Labs	99.77%	12.06 / 10 mg 121% of label	Pass	LCA-07222026MS10✓
26 Jul 2026	Idun Peptides	Kovera Labs	99.71%	42.14 / 40 mg 105% of label	Pass	MC40-260630✓
25 Jul 2026	Wolverine Peptides	freedomdiagnosticstesting.com	99.61%	45.62 / 40 mg 114% of label	—	View record →
22 Jul 2026	Orvella Labs	Kovera Labs	99.67%	10.5 / 10 mg 105% of label	Pass	MOT-57H9C✓
19 Jul 2026	Peptide Foundry	ILS Laboratories	99.71%	10.72 / 10 mg 107% of label	Pass	FO510✓
19 Jul 2026	Offline Peptides	freedomdiagnosticstesting.com	99.17%	10.27 / 10 mg 103% of label	—	OP-MS10-0726✓
17 Jul 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.93%	11.55 / 10 mg 116% of label	—	MOTC10 RP03✓
15 Jul 2026	Pepme	liquilabs	99.20%	9.33 / 10 mg 93% of label	—	View record →
15 Jul 2026	Aurora Peptides	Kovera Labs	99.88%	41.66 / 40 mg 104% of label	Pass	MS40-072026-001✓
15 Jul 2026	High Tide Compounds	Kovera Labs	99.56%	10.2 / 10 mg 102% of label	Pass	MS10-003✓
15 Jul 2026	Molecular Solutions Peptides	freedomdiagnosticstesting.com	99.12%	12.69 / 10 mg 127% of label	Pass	R260708-MS1-R001✓
13 Jul 2026	Peptinexia	Kovera Labs	99.46%	41.14 / 40 mg 103% of label	Pass	MOT0400616261✓
13 Jul 2026	Pure Amino	ILS Laboratories	99.75%	10.46 / 10 mg 105% of label	Reported	PA25030201✓
13 Jul 2026	Global Aminos	freedomdiagnosticstesting.com	99.60%	10.98 / 10 mg 110% of label	—	View record →
12 Jul 2026	NorthStar Compounds	freedomdiagnosticstesting.com	99.71%	42.84 / 40 mg 107% of label	—	SPRI-GBMS-70726✓
12 Jul 2026	AMC Essentials	Kovera Labs	99.56%	40.28 / 40 mg 101% of label	Pass	AMC-MOTS-40-01✓
10 Jul 2026	Curo	BTLabs	99.90%	10.5 / 10 mg 105% of label	—	MOTS10ZO626
9 Jul 2026	Apexx Biolabs	freedomdiagnosticstesting.com	99.75%	12.42 / 10 mg 124% of label	—	Blue Cap-2✓
9 Jul 2026	Glow Aminos	ILS Laboratories	99.81%	20.95 / 20 mg 105% of label	—	GL-010198✓
9 Jul 2026	Ascend Science	Kovera Labs	99.70%	41.39 / 40 mg 103% of label	—	C1067704 84-4✓
9 Jul 2026	Ascend Science	Kovera Labs	99.75%	11.79 / 10 mg 118% of label	—	C1067740 84-4✓
6 Jul 2026	Modified Aminos	Ethos Analytics	99.00%	20.59 / 20 mg 103% of label	Pass	MA-MOTS-200
4 Jul 2026	Peptide Plugs	freedomdiagnosticstesting.com	99.91%	9.99 / 10 mg 100% of label	Pass	149-01-DK✓
4 Jul 2026	Glow Aminos	ILS Laboratories	99.74%	40.93 / 40 mg 102% of label	—	GL-010186✓
3 Jul 2026	Glow Aminos	ILS Laboratories	99.74%	41.67 / 40 mg 104% of label	—	GL-010182✓
3 Jul 2026	NuLife Peptides	freedomdiagnosticstesting.com	99.60%	10.17 / 10 mg 102% of label	Pass	NLMC10501✓
1 Jul 2026	Polaris Peptides	Accumark Labs	99.88%	12.12 / 10 mg 121% of label	—	POL-M10-8✓
30 Jun 2026	Peptinexia	Kovera Labs	99.73%	8.7 / 10 mg 87% of label	Pass	MOT0100612261✓
29 Jun 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.46%	11.49 / 10 mg 115% of label	—	MOTC10-RP02✓
29 Jun 2026	Honest Peptide	freedomdiagnosticstesting.com	99.50%	12.53 / 10 mg 125% of label	—	MS1005102026✓
28 Jun 2026	Studz Peptides	ILS Laboratories	99.86%	10.41 / 10 mg 104% of label	—	MS10609LIS✓
28 Jun 2026	Studz Peptides	ILS Laboratories	99.72%	41.64 / 40 mg 104% of label	—	MS40609LIS✓
27 Jun 2026	Humatide Peptides	ILS Laboratories	99.76%	41.63 / 40 mg 104% of label	—	H40MOTS060126
26 Jun 2026	Idun Peptides	Kovera Labs	99.81%	11.74 / 10 mg 117% of label	Pass	MC10-260807✓
26 Jun 2026	Kalyx Labs	freedomdiagnosticstesting.com	99.48%	9.97 / 10 mg 100% of label	—	MS10-B02✓
25 Jun 2026	Corix Labs	Janoshik Labs	98.83%	10.82 / 10 mg 108% of label	—	MOTS-C - 06/26✓
24 Jun 2026	My Amino Lab	Kovera Labs	99.68%	11.16 / 10 mg 112% of label	—	V2606-M10-2401✓
23 Jun 2026	Sunrise Bioresearch	ILS Laboratories	99.33%	10.48 / 10 mg 105% of label	—	MTC10MAY26-02✓
23 Jun 2026	Puratek Peptides	ILS Laboratories	99.90%	10.38 / 10 mg 104% of label	—	MOT10002✓
22 Jun 2026	Veratis Bio Peptides	freedomdiagnosticstesting.com	99.42%	9.44 / 10 mg 94% of label	—	MOT260618A✓
22 Jun 2026	Meipeptide	Janoshik Labs	98.52%	45.31 / 40 mg 113% of label	—	View record →
22 Jun 2026	PeptideRUO	freedomdiagnosticstesting.com	99.95%	13.41 / 10 mg 134% of label	—	MO100615✓
22 Jun 2026	Cocer Peptides	Janoshik Labs	99.20%	23.38 / 20 mg 117% of label	—	CS-mc20-0605✓
21 Jun 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.92%	10.93 / 10 mg 109% of label	—	PL-MOT10-05✓
21 Jun 2026	Pep Club USA	freedomdiagnosticstesting.com	99.60%	41.07 / 40 mg 103% of label	—	View record →
20 Jun 2026	Backroad Aminos	Kovera Labs	99.69%	10.13 / 10 mg 101% of label	Pass	BA060126MS10✓
20 Jun 2026	High Tide Compounds	Kovera Labs	99.39%	10.63 / 10 mg 106% of label	Pass	MS10-002✓
20 Jun 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.62%	44.6 / 40 mg 112% of label	—	PL-24-MOT41✓
20 Jun 2026	Double R Labs	Kovera Labs	99.60%	11.45 / 10 mg 115% of label	Pass	DRL-06-MS10✓
20 Jun 2026	Research Chem HQ	Kovera Labs	99.46%	10.33 / 10 mg 103% of label	Pass	#HX8BC✓
19 Jun 2026	Ktechpeptide	Janoshik Labs	99.03%	11.87 / 10 mg 119% of label	—	2026-6✓
19 Jun 2026	Ktechpeptide	Janoshik Labs	99.23%	46.46 / 40 mg 116% of label	—	2026-6✓
19 Jun 2026	Synova Supply	Horizon Analytical	99.39%	9.88 / 10 mg 99% of label	—	SS-6963679-P
17 Jun 2026	Nova Labs	Janoshik Labs	98.55%	10.44 / 10 mg 104% of label	—	View record →
17 Jun 2026	Optimum Formula	Kovera Labs	99.46%	10.33 / 10 mg 103% of label	Pass	#HX8BC✓
16 Jun 2026	Real Peptides	Kovera Labs	99.35%	11.02 / 10 mg 110% of label	Pass	BATCH-0322✓
15 Jun 2026	Oasis Labs	Bioviridian	99.90%	40.61 / 40 mg 102% of label	—	112455✓
15 Jun 2026	Oasis Labs	Bioviridian	99.90%	10.33 / 10 mg 103% of label	—	112455✓
15 Jun 2026	LA Peptides	Bioviridian	99.80%	10.21 / 10 mg 102% of label	Pass	1318
14 Jun 2026	Nura Peptide	freedomdiagnosticstesting.com	99.21%	12.44 / 10 mg 124% of label	Pass	MOT10-062026-1✓
14 Jun 2026	Rescue Research USA Peptides	freedomdiagnosticstesting.com	99.56%	45.93 / 45 mg 102% of label	Pass	WP-MS-2606
12 Jun 2026	S1 Research	freedomdiagnosticstesting.com	99.58%	47.85 / 40 mg 120% of label	Pass	MTB060926✓
12 Jun 2026	Protide Health	freedomdiagnosticstesting.com	99.14%	44.33 / 40 mg 111% of label	Pass	PH-mc-40-0313
12 Jun 2026	Excalibur Peptides	freedomdiagnosticstesting.com	99.60%	10.01 / 10 mg 100% of label	—	View record →
10 Jun 2026	Peptide Maxxing	ILS Laboratories	99.91%	10.53 / 10 mg 105% of label	—	MOT716✓
10 Jun 2026	Modern Research Peptides	freedomdiagnosticstesting.com	99.63%	9.61 / 10 mg 96% of label	—	823578✓
8 Jun 2026	Peptide Partners	TrustPointe Analytics	99.99%	10.02 / 10 mg 100% of label	—	View record →
8 Jun 2026	Modified Aminos	Ethos Analytics	99.00%	10.27 / 10 mg 103% of label	Pass	MA-MOTS-101
8 Jun 2026	Protide Health	freedomdiagnosticstesting.com	99.56%	11.64 / 10 mg 116% of label	Pass	PH-mcI0-0120
8 Jun 2026	BetterBio Synthesis	freedomdiagnosticstesting.com	99.20%	12.92 / 10 mg 129% of label	—	MOTC020126
7 Jun 2026	Ramp Peptides	freedomdiagnosticstesting.com	99.72%	40.02 / 40 mg 100% of label	—	MOTSC40-RP01✓
5 Jun 2026	Voltera Sciences Peptides	ILS Laboratories	99.39%	10.65 / 10 mg 107% of label	—	MS10.05.28.26✓
5 Jun 2026	PeptidePro Canada	Janoshik Labs	99.13%	47.39 / 40 mg 118% of label	—	2511-2-266
4 Jun 2026	S1 Research	freedomdiagnosticstesting.com	99.26%	11.42 / 10 mg 114% of label	Pass	MT052926S1✓
3 Jun 2026	Glow Aminos	ILS Laboratories	99.72%	21.26 / 20 mg 106% of label	—	GL-010135✓
2 Jun 2026	Backroad Aminos	Kovera Labs	99.67%	42.57 / 40 mg 106% of label	Pass	BA060126MS40✓
2 Jun 2026	Aurora Aminos	freedomdiagnosticstesting.com	99.39%	10.64 / 10 mg 106% of label	Pass	MC10-2605✓
2 Jun 2026	Proxiva Peptides	Vanguard Laboratory	99.15%	10.3 / 10 mg 103% of label	—	View record →
2 Jun 2026	Proxiva Peptides	Vanguard Laboratory	99.07%	42.22 / 40 mg 106% of label	—	View record →
1 Jun 2026	HMM Peptide	Janoshik Labs	99.21%	19.42 / 20 mg 97% of label	—	View record →
1 Jun 2026	Puratek Peptides	ILS Laboratories	99.13%	41.3 / 40 mg 103% of label	—	MOT40006✓
31 May 2026	Revitalized Research	Horizon Analytical	99.25%	10.15 / 10 mg 102% of label	—	RRL-5532046-P
30 May 2026	Warrior Makers	Testides	98.23%	20.29 / 20 mg 101% of label	Pass	05-SM2
30 May 2026	Warrior Makers	Testides	98.31%	41.62 / 40 mg 104% of label	Pass	11259-SG54
30 May 2026	Warrior Makers	Testides	98.16%	10.12 / 10 mg 101% of label	Pass	11259-SG5ZY
30 May 2026	Perfect Peptides	Chromate	99.14%	34.74 / 40 mg 87% of label	Reported	PP8690768✓
30 May 2026	Protide Health	freedomdiagnosticstesting.com	99.61%	23.85 / 20 mg 119% of label	Pass	PH MC20 0228
30 May 2026	Elutide	ILS Laboratories	99.50%	10.51 / 10 mg 105% of label	—	ELU26008-MOT10
29 May 2026	Peptide Maxxing	freedomdiagnosticstesting.com	99.07%	46.28 / 40 mg 116% of label	—	MOT982✓
28 May 2026	Studz Peptides	Kovera Labs	99.11%	22.76 / 20 mg 114% of label	Pass	MTSC20-051926-MIA✓
28 May 2026	Adria Science	liquilabs	99.20%	10.39 / 10 mg 104% of label	—	2026239
27 May 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.44%	39.36 / 40 mg 98% of label	—	PL-24-MOT40✓
27 May 2026	Full Scale Peptides	freedomdiagnosticstesting.com	99.81%	9.85 / 10 mg 99% of label	—	FSP-MOTSC10-0326-A✓
27 May 2026	Oneday Compounds	ILS Laboratories	99.91%	10.45 / 10 mg 105% of label	—	OC-MOT10-105✓
27 May 2026	Good Science	Vanguard Laboratory	99.15%	16.16 / 15 mg 108% of label	Pass	3548243
27 May 2026	Good Science	Vanguard Laboratory	99.25%	16.43 / 15 mg 110% of label	—	3548243
27 May 2026	Good Science	Vanguard Laboratory	99.11%	21.35 / 20 mg 107% of label	Pass	3548249
27 May 2026	Blank Peptides	Horizon Analytical	99.53%	9.82 / 10 mg 98% of label	—	B-7058391-P
26 May 2026	Maple Research Labs	Testides	99.69%	10.82 / 10 mg 108% of label	—	View record →
26 May 2026	High Tide Compounds	Kovera Labs	98.83%	9.61 / 10 mg 96% of label	Pass	MOT10-001✓
26 May 2026	Snap Peptides	Kovera Labs	99.84%	11.53 / 10 mg 115% of label	Pass	SP26-MOTC-03✓
25 May 2026	Nova Labs	Janoshik Labs	99.12%	42.98 / 40 mg 107% of label	—	View record →
23 May 2026	Glow Aminos	ILS Laboratories	99.88%	10.55 / 10 mg 106% of label	—	GL-010121✓
23 May 2026	Oneday Compounds	ILS Laboratories	99.91%	42.41 / 40 mg 106% of label	—	OC-MOT40-101✓
23 May 2026	NG Peptide	ILS Laboratories	99.04%	41.39 / 40 mg 103% of label	—	MTS40-07
21 May 2026	TriVial BioWorks	Kovera Labs	98.87%	11.91 / 10 mg 119% of label	Pass	MC10-0513✓
21 May 2026	BulkGLP	freedomdiagnosticstesting.com	99.41%	21.48 / 20 mg 107% of label	Pass	5105
21 May 2026	Midwest Peptide	freedomdiagnosticstesting.com	99.68%	11.12 / 11 mg 101% of label	—	MPMС003
20 May 2026	Instant Peptides	Kovera Labs	99.75%	11.31 / 10 mg 113% of label	—	2026-0276-B
19 May 2026	Nova BioLabs Peptides	Uzorak	98.93%	10.34 / 10 mg 103% of label	—	B9T-ZED✓
19 May 2026	Purity Peptides	MDx BioAnalytical Laboratory	99.78%	10.23 / 10 mg 102% of label	Pass	View record →
19 May 2026	Proforma Peptides	Analiza Białek	99.00%	39.52 / 40 mg 99% of label	—	2068
19 May 2026	Proforma Peptides	Analiza Białek	99.00%	10.2 / 10 mg 102% of label	—	2068
19 May 2026	Profound Aminos	TrustPointe Analytics	99.02%	9.79 / 10 mg 98% of label	—	SP-3824
18 May 2026	Honest Peptide	freedomdiagnosticstesting.com	99.60%	11.95 / 10 mg 119% of label	—	MS1005102026✓
17 May 2026	Bluum Peptides	freedomdiagnosticstesting.com	99.56%	11.38 / 10 mg 114% of label	—	MOT102605-78M
17 May 2026	Instant Peptides	Kovera Labs	99.94%	40.37 / 40 mg 101% of label	—	2026-0266-B
17 May 2026	Disguised Alpha	Chromate	99.10%	10.14 / 10 mg 101% of label	Reported	4349A
16 May 2026	Elutide	Horizon Analytical	99.58%	10.1 / 10 mg 101% of label	—	E-7058391-P
14 May 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.59%	12.03 / 10 mg 120% of label	—	PL-23-MOT10✓
14 May 2026	PeptidePro Canada	Janoshik Labs	99.07%	11.42 / 10 mg 114% of label	—	2511-3-238
14 May 2026	Zen Aminos	freedomdiagnosticstesting.com	99.49%	45.42 / 40 mg 114% of label	—	ZAP-MSCA02
13 May 2026	Synthesis Peptides	Kovera Labs	99.96%	11.25 / 10 mg 113% of label	—	MOT10526
12 May 2026	Sunrise Bioresearch	ILS Laboratories	99.98%	10.64 / 10 mg 106% of label	—	MTC10MAY26-01✓
12 May 2026	True Research Labs	Horizon Analytical	99.58%	10.1 / 10 mg 101% of label	—	TRL-8502644
12 May 2026	Warrior Makers	MZ Biolabs	99.56%	not reported	—	11259-SG54
12 May 2026	Warrior Makers	MZ Biolabs	99.51%	not reported	—	05-SM2
12 May 2026	Warrior Makers	MZ Biolabs	99.84%	not reported	—	11259-SG51
12 May 2026	EZ Peps	ILS Laboratories	99.87%	25.38 / 24 mg 106% of label	—	MO200329✓
12 May 2026	LA Peptides	Bioviridian	99.90%	11.91 / 10 mg 119% of label	Pass	1218
12 May 2026	Research Chem HQ	ILS Laboratories	99.87%	10.62 / 10 mg 106% of label	—	#EF4F6✓
11 May 2026	EZ Peps	ILS Laboratories	99.68%	46.49 / 45 mg 103% of label	—	MO400419✓
8 May 2026	PeptideRUO	freedomdiagnosticstesting.com	99.58%	41.09 / 40 mg 103% of label	—	MO400918✓
8 May 2026	PeptideRUO	freedomdiagnosticstesting.com	99.12%	10.69 / 10 mg 107% of label	—	MO100919✓
7 May 2026	Petratide Science	freedomdiagnosticstesting.com	99.41%	10.43 / 10 mg 104% of label	—	PS05-MS10
7 May 2026	Reta One Labs	Kovera Labs	99.95%	44.23 / 40 mg 111% of label	Pass	MTS400526
6 May 2026	Pure Health Peptides	Ethos Analytics	99.00%	41.93 / 40 mg 105% of label	—	TUY-030926
5 May 2026	Vertex Labs	BTLabs	99.80%	46.4 / 40 mg 116% of label	—	MC0000028
4 May 2026	Midshire Labs (formerly Regen Peptides)	Janoshik Labs	99.06%	48.07 / 40 mg 120% of label	—	MO40-0419
4 May 2026	Panda Peptides	Janoshik Labs	99.04%	11.28 / 10 mg 113% of label	—	PP2602-031A
4 May 2026	Chameleon PeptidesClosed	Janoshik Labs	99.04%	11.28 / 10 mg 113% of label	—	B002
4 May 2026	Profound Aminos	TrustPointe Analytics	99.40%	10.53 / 10 mg 105% of label	—	SP-3687
4 May 2026	Profound Aminos	TrustPointe Analytics	99.42%	10.26 / 10 mg 103% of label	—	SP-3688
3 May 2026	Signum Scientific	Horizon Analytical	99.39%	9.95 / 10 mg 99% of label	—	MTS-10-03
3 May 2026	Protide Health	freedomdiagnosticstesting.com	99.54%	13.31 / 10 mg 133% of label	Pass	PH-MC10-0120
3 May 2026	Bluum Peptides	freedomdiagnosticstesting.com	99.36%	9.71 / 10 mg 97% of label	—	MOT102604-76A
1 May 2026	GenPeptide	freedomdiagnosticstesting.com	99.72%	13.06 / 10 mg 131% of label	—	GPMOT10042226✓
1 May 2026	Oneday Compounds	Vanguard Laboratory	99.80%	10.38 / 10 mg 104% of label	—	OC-MOT10-104
30 Apr 2026	Bluum Peptides	freedomdiagnosticstesting.com	99.54%	43.82 / 40 mg 110% of label	—	MOT402604-59S
29 Apr 2026	Valor Peptides	Accumark Labs	99.43%	11.37 / 10 mg 114% of label	—	ARC-MO10-002
27 Apr 2026	Modern Research Peptides	freedomdiagnosticstesting.com	99.17%	43.52 / 40 mg 109% of label	—	GKHC2624✓
27 Apr 2026	KOLD Peptides	Accumark Labs	97.96%	11 / 10 mg 110% of label	—	1026
27 Apr 2026	Nova Peptide Supply	freedomdiagnosticstesting.com	99.77%	10.24 / 10 mg 102% of label	Pass	NV-P-F8PZ5
26 Apr 2026	Plum Labs Research	Kovera Labs	99.84%	10.73 / 10 mg 107% of label	Pass	PLY-MS-102✓
26 Apr 2026	Peptide Minds	freedomdiagnosticstesting.com	99.56%	12.3 / 10 mg 123% of label	—	PM-04236✓
25 Apr 2026	Alpha Peptides	Analytical Formulations Inc	99.70%	10.84 / 10 mg 108% of label	—	MC10-32526328
24 Apr 2026	Amino Forge	Horizon Analytical	99.36%	10.6 / 10 mg 106% of label	—	A-9011296
24 Apr 2026	Pure Health Peptides	Ethos Analytics	99.00%	20.85 / 20 mg 104% of label	—	TUY-030926
23 Apr 2026	Precisely Peptides	Vanguard Laboratory	99.27%	9.91 / 10 mg 99% of label	—	PP412-26-001
22 Apr 2026	Oath Peptides	freedomdiagnosticstesting.com	99.30%	11.92 / 10 mg 119% of label	Pass	A1236
21 Apr 2026	Saiyan Med	Janoshik Labs	99.80%	10.71 / 10 mg 107% of label	—	SYM-MS-B2604✓
21 Apr 2026	Petratide Science	freedomdiagnosticstesting.com	99.56%	41.23 / 40 mg 103% of label	—	View record →
21 Apr 2026	Coffee and Peppers	freedomdiagnosticstesting.com	99.60%	10.15 / 10 mg 102% of label	Pass	CPMOTS1026041607
20 Apr 2026	Amplified Labs	Bioviridian	99.90%	10.51 / 10 mg 105% of label	—	MTS-C10ZZ03
19 Apr 2026	BulkGLP	freedomdiagnosticstesting.com	99.68%	48.17 / 50 mg 96% of label	Pass	5105
18 Apr 2026	Silverstone Labs Co	freedomdiagnosticstesting.com	99.43%	11.27 / 10 mg 113% of label	Pass	MTS10-0326✓
17 Apr 2026	Aigil Research	freedomdiagnosticstesting.com	99.59%	11.16 / 10 mg 112% of label	—	AG-MS10✓
17 Apr 2026	Ameano Peptides	Janoshik Labs	99.81%	11.26 / 10 mg 113% of label	—	MOT1003302026-18✓
17 Apr 2026	Elutide	Horizon Analytical	99.24%	10.21 / 10 mg 102% of label	—	E-6063329-P
17 Apr 2026	Verified Peptides	Janoshik Labs	99.60%	20.86 / 21 mg 99% of label	—	MO04261220K
15 Apr 2026	Oath Peptides	freedomdiagnosticstesting.com	99.55%	39.15 / 40 mg 98% of label	Pass	B1326061
15 Apr 2026	Reta One Labs	Kovera Labs	99.86%	11.04 / 10 mg 110% of label	Pass	MTS100326
14 Apr 2026	EZ Peptides	Janoshik Labs	99.73%	11.24 / 10 mg 112% of label	—	EZP-MOT1003302026-18✓
14 Apr 2026	Zen Aminos	freedomdiagnosticstesting.com	99.50%	11.81 / 10 mg 118% of label	—	ZAMSC02
14 Apr 2026	Elite Research USA	freedomdiagnosticstesting.com	99.08%	45.89 / 50 mg 92% of label	Pass	37130SY0326
13 Apr 2026	LA Peptides	Bioviridian	99.90%	12.31 / 10 mg 123% of label	Pass	BATCH 1018
12 Apr 2026	Pure Health Peptides	Ethos Analytics	99.00%	10.09 / 10 mg 101% of label	—	TUY-030926
12 Apr 2026	Go Alpha Labs	freedomdiagnosticstesting.com	99.46%	10.95 / 10 mg 110% of label	—	LO07-10
11 Apr 2026	Plum Labs Research	Kovera Labs	99.98%	11.04 / 10 mg 110% of label	Pass	PLY-MS-101✓
11 Apr 2026	Synthesis Peptides	freedomdiagnosticstesting.com	99.36%	46.85 / 40 mg 117% of label	—	View record →
10 Apr 2026	Umbrella Labs	Vanguard Laboratory	99.01%	9.74 / 10 mg 97% of label	—	ULP-47003
10 Apr 2026	24Peptides	liquilabs	99.10%	46.4 / 40 mg 116% of label	Pass	GF-MOTSC40-B241
9 Apr 2026	Rescue Research USA Peptides	freedomdiagnosticstesting.com	99.42%	11.35 / 10 mg 114% of label	—	View record →
9 Apr 2026	Peppy&Me	Krause Analytical	99.10%	10.52 / 10 mg 105% of label	—	PMMO102603A
9 Apr 2026	Glacier Aminos	Kovera Labs	99.85%	10.93 / 10 mg 109% of label	Pass	MOT10GA-04
8 Apr 2026	Perfect Peptides	Chromate	99.55%	20.93 / 20 mg 105% of label	Pass	PP2632867✓
8 Apr 2026	Omegamino	freedomdiagnosticstesting.com	99.30%	11.25 / 10 mg 113% of label	—	1001
7 Apr 2026	PeptideTech	freedomdiagnosticstesting.com	99.46%	11.62 / 10 mg 116% of label	Pass	MOT10-6565✓
7 Apr 2026	Vera	freedomdiagnosticstesting.com	99.54%	11.42 / 10 mg 114% of label	—	MC10-260324A
7 Apr 2026	Glacier Aminos	Kovera Labs	99.89%	21.39 / 20 mg 107% of label	Pass	MOTGA-04
4 Apr 2026	Peptide Partners	Kovera Labs	99.96%	11.22 / 10 mg 112% of label	Pass	MC202603
3 Apr 2026	Red Dirt (RDR) Peptides	freedomdiagnosticstesting.com	99.53%	24.04 / 20 mg 120% of label	Pass	MTC202604✓
3 Apr 2026	American Peptides	Bioviridian	99.90%	11.28 / 10 mg 113% of label	Pass	MOTS10-0318
3 Apr 2026	24Peptides	liquilabs	99.40%	22.3 / 20 mg 112% of label	Pass	GF-MOTSC20-B241
3 Apr 2026	Petratide Science	freedomdiagnosticstesting.com	99.74%	10.22 / 10 mg 102% of label	—	PS04-MS10P
3 Apr 2026	NuScience Peptides	freedomdiagnosticstesting.com	99.24%	27.06 / 20 mg 135% of label	—	00986
2 Apr 2026	Polaris Peptides	BTLabs	99.90%	11.5 / 10 mg 115% of label	—	POL-M10-07
2 Apr 2026	Core Peptides	Vanguard Laboratory	99.06%	10 / 10 mg 100% of label	—	View record →
1 Apr 2026	DS Research Peptides	freedomdiagnosticstesting.com	99.31%	10.02 / 10 mg 100% of label	Pass	49906
1 Apr 2026	Rhome Research	freedomdiagnosticstesting.com	98.82%	9.68 / 10 mg 97% of label	Pass	MC001
30 Mar 2026	VRIL Peptides	Janoshik Labs	99.71%	42.74 / 40 mg 107% of label	—	20260311
30 Mar 2026	Evolve Biopep	Ethos Analytics	98.00%	10.59 / 10 mg 106% of label	Pass	EM-260322-H10
30 Mar 2026	Evolve Biopep	Ethos Analytics	98.00%	42.88 / 40 mg 107% of label	Pass	EM-260322-H40
29 Mar 2026	Petratide Science	freedomdiagnosticstesting.com	99.20%	10.13 / 10 mg 101% of label	—	PS03-MS10
28 Mar 2026	Plum Labs Research	freedomdiagnosticstesting.com	99.31%	12.64 / 10 mg 126% of label	Pass	PLR-MS101✓
27 Mar 2026	NovaCell Peptides	liquilabs	99.70%	10.41 / 10 mg 104% of label	—	MO-022601
26 Mar 2026	Red Dirt (RDR) Peptides	freedomdiagnosticstesting.com	99.07%	12.59 / 10 mg 126% of label	Pass	MTC102602✓
26 Mar 2026	Glow Aminos	freedomdiagnosticstesting.com	99.36%	10.71 / 10 mg 107% of label	Pass	GL-010084✓
26 Mar 2026	Oneday Compounds	Vanguard Laboratory	99.80%	9.63 / 10 mg 96% of label	—	OC-MOT10-102
26 Mar 2026	Elite Research USA	freedomdiagnosticstesting.com	99.35%	11.94 / 10 mg 119% of label	Pass	3739AN0326
26 Mar 2026	Vylix Research	freedomdiagnosticstesting.com	99.09%	11.47 / 10 mg 115% of label	—	View record →
25 Mar 2026	Prime Peptides	Vanguard Laboratory	99.05%	10.74 / 10 mg 107% of label	Pass	11242025MO
23 Mar 2026	Silverstone Labs Co	freedomdiagnosticstesting.com	99.53%	21.21 / 20 mg 106% of label	—	MTS20-0326✓
23 Mar 2026	Pure U.S. Peptides	Vanguard Laboratory	99.01%	43.94 / 40 mg 110% of label	Pass	M26C400
22 Mar 2026	Optimum Formula	Kovera Labs	99.99%	10.91 / 10 mg 109% of label	Pass	2JPKM✓
22 Mar 2026	Research Chem HQ	Kovera Labs	99.99%	10.91 / 10 mg 109% of label	Pass	2JPKM✓
20 Mar 2026	Glow Aminos	freedomdiagnosticstesting.com	99.55%	40.53 / 40 mg 101% of label	Pass	GL-010080✓
20 Mar 2026	Oath Peptides	freedomdiagnosticstesting.com	99.46%	11.7 / 10 mg 117% of label	—	B10526
18 Mar 2026	Enhanced Peptides	Vanguard Laboratory	99.28%	10.65 / 10 mg 107% of label	—	C85732
18 Mar 2026	Studz Peptides	Kovera Labs	99.97%	43.57 / 40 mg 109% of label	—	MOTS40-03052026-LIS✓
18 Mar 2026	Midshire Labs (formerly Regen Peptides)	Janoshik Labs	99.44%	11.89 / 10 mg 119% of label	—	MO10-0305
17 Mar 2026	Nela Peptides	freedomdiagnosticstesting.com	99.13%	10.75 / 10 mg 108% of label	—	2603160181
16 Mar 2026	Midshire Labs (formerly Regen Peptides)	Janoshik Labs	99.26%	25.73 / 20 mg 129% of label	—	MO20-0210
16 Mar 2026	Vandl Labs	Vanguard Laboratory	99.80%	10.31 / 10 mg 103% of label	Pass	MC.04.01.10
16 Mar 2026	Ion Peptide	Analytical Formulations Inc	99.60%	10.78 / 10 mg 108% of label	—	MC10-03102026
14 Mar 2026	Glow Aminos	freedomdiagnosticstesting.com	99.59%	11.31 / 10 mg 113% of label	Pass	GL-010057✓
13 Mar 2026	PeptideTech	Vanguard Laboratory	99.02%	10.7 / 10 mg 107% of label	—	MOT10-6560
13 Mar 2026	Stratford Peptides	Analiza Białek	99.43%	9.86 / 10 mg 99% of label	—	100013168
12 Mar 2026	Modern Research Peptides	freedomdiagnosticstesting.com	99.38%	35.12 / 40 mg 88% of label	—	WCHKRS2601✓
11 Mar 2026	PurgoLabs Peptides	freedomdiagnosticstesting.com	99.83%	46.79 / 40 mg 117% of label	—	PS03-MCB✓
11 Mar 2026	Petratide Science	freedomdiagnosticstesting.com	99.83%	46.79 / 40 mg 117% of label	—	PS03-MCB
10 Mar 2026	Offline Peptides	freedomdiagnosticstesting.com	99.90%	43.35 / 40 mg 108% of label	—	OP-MS40-0326✓
10 Mar 2026	Everest Peptides	freedomdiagnosticstesting.com	99.86%	38.86 / 40 mg 97% of label	—	EVR-MOTS40-2603-001
10 Mar 2026	Vi Corpus	Janoshik Labs	99.15%	11.71 / 10 mg 117% of label	—	VCAU26.1
10 Mar 2026	Modern Aminos	freedomdiagnosticstesting.com	99.65%	13.09 / 10 mg 131% of label	Pass	BX-P-W7G6
6 Mar 2026	GenPeptide	freedomdiagnosticstesting.com	99.63%	12.53 / 10 mg 125% of label	—	GPMOT10030526✓
5 Mar 2026	Certified Peptides	Vanguard Laboratory	98.84%	37.15 / 40 mg 93% of label	—	260225MO405
5 Mar 2026	LA Peptides	Bioviridian	99.80%	10.31 / 10 mg 103% of label	Pass	818
5 Mar 2026	Real Peptides	freedomdiagnosticstesting.com	99.89%	12.02 / 10 mg 120% of label	—	2603040146
5 Mar 2026	Peptira	freedomdiagnosticstesting.com	99.80%	11.2 / 10 mg 112% of label	Pass	MOTS10-005
4 Mar 2026	Verified Peptides	Janoshik Labs	99.91%	12.05 / 12 mg 100% of label	—	MO02261110J
3 Mar 2026	Wolverine Peptides	Chromate	99.48%	41.55 / 10 mg 415% of labelCheck label	—	View record →
28 Feb 2026	True Research Labs	Horizon Analytical	99.26%	10.52 / 10 mg 105% of label	—	TRL-5217772
28 Feb 2026	Imagine First Labs	Horizon Analytical	99.20%	10.6 / 10 mg 106% of label	—	IF-8561878
28 Feb 2026	OROS Research	freedomdiagnosticstesting.com	98.17%	9.82 / 10 mg 98% of label	Pass	1622733
28 Feb 2026	Direct Peptides	Horizon Analytical	99.20%	10.6 / 10 mg 106% of label	—	DPS-8561878
28 Feb 2026	Direct Peptides	Horizon Analytical	99.26%	10.52 / 10 mg 105% of label	—	DPS-5217772
27 Feb 2026	AminoQuest Labs	freedomdiagnosticstesting.com	99.95%	10.69 / 10 mg 107% of label	—	AQ-258039-D
27 Feb 2026	Reta One Labs	Vanguard Laboratory	99.06%	10.4 / 10 mg 104% of label	—	MTS100326
27 Feb 2026	Nova Peptide Supply	freedomdiagnosticstesting.com	99.76%	45.34 / 40 mg 113% of label	Pass	NV-P-6Z5F
27 Feb 2026	Felix Chemical Supply	freedomdiagnosticstesting.com	99.73%	11.3 / 10 mg 113% of label	Pass	022526-MOT-6 (green)
26 Feb 2026	Optimum Aminos	freedomdiagnosticstesting.com	99.80%	10.33 / 10 mg 103% of label	—	MS10-26A✓
26 Feb 2026	Glowing Peptides	Janoshik Labs	99.05%	11.26 / 10 mg 113% of label	—	C117
25 Feb 2026	Elevated Peptides	MZ Biolabs	99.73%	not reported	—	2026-02-09
24 Feb 2026	Ascension Peptides	MZ Biolabs	99.71%	9.42 / 10 mg 94% of label	—	24-01260229
24 Feb 2026	Glacier Aminos	freedomdiagnosticstesting.com	99.51%	27.48 / 20 mg 137% of label	Pass	MOTCGA-03
24 Feb 2026	Peptide Supply Co	freedomdiagnosticstesting.com	99.94%	10.64 / 10 mg 106% of label	—	MS1022026
23 Feb 2026	Regenorix Peptides	liquilabs	98.90%	10.92 / 10 mg 109% of label	Pass	RGX-MOTSC10-2602-01
21 Feb 2026	Prosperity Peptides	freedomdiagnosticstesting.com	99.94%	52.31 / 40 mg 131% of label	—	MOTS-001
21 Feb 2026	NeuroLabs	freedomdiagnosticstesting.com	99.91%	46.28 / 40 mg 116% of label	—	2602190129
21 Feb 2026	NG Peptide	freedomdiagnosticstesting.com	99.83%	46.84 / 40 mg 117% of label	Pass	MS41-23
20 Feb 2026	Zen Aminos	freedomdiagnosticstesting.com	99.83%	35.2 / 40 mg 88% of label	—	ZAMSC401
18 Feb 2026	Peptide Koning	Axiom Analytics	99.57%	40.28 / 40 mg 101% of label	Pass	PK-RG-009
18 Feb 2026	Peptide Koning	Axiom Analytics	99.32%	10.63 / 10 mg 106% of label	Pass	PK-RG-009
18 Feb 2026	Nova Peptide Supply	freedomdiagnosticstesting.com	99.80%	11.01 / 10 mg 110% of label	Pass	NV-P-5QYC

Measured amount in amber when it is under 90% or over 130% of the label; Check label when it is under 80% or over 150%. Records without a lot number link as View →. Blend and other-form rows keep their place and page; they are tagged and left out of the figures above, because a blend certificate reports one purity and one amount for the whole vial. Blends with their own page: Mitochondrial Blend lab tests (6)

Seven checks for any MOTS-C certificate

The same seven questions decide whether a certificate of analysis means anything, whichever compound it describes. Six are about the document; the seventh is about what no document can tell you.

An independent, batch-matched COA. The certificate must name the batch or lot in your hands, and must come from a laboratory the vendor neither owns nor pays. A specimen certificate from an earlier lot proves nothing about the vial you were sent.
HPLC purity, read against a known band. A purity figure is only informative against the distribution for that compound. "Above 98%" is not a claim — the useful question is whether the result sits inside the range the rest of the market reports. How to read HPLC and mass-spec results.
Mass-spectrometry identity. HPLC says how much of the sample is one thing; it does not say which thing. Only a mass-spec result establishes identity, and it is the only check that separates compounds a few daltons apart. Contamination is not hypothetical: research-grade custom peptides from two independent commercial suppliers were found to carry contaminating peptides at roughly 1% by weight, enough to produce false-positive results in immunology assays (Clinical and Vaccine Immunology, 2008 — a study of HIV vaccine peptide libraries rather than of any compound on this site).
Net content, measured rather than assumed. Purity and quantity are different questions: a vial can be 99.7% pure and still contain two thirds of the labelled mass. Why 10 mg isn't 10 mg.
Endotoxin (LAL) on the batch. An absent endotoxin line means the batch was not tested — not that it passed. Endotoxin testing and LAL interpretation.
Who ran the test, and what they left off. A laboratory with a record on this compound, named on the certificate, with a verification route back to it. Testing laboratories we track · Red flags in a certificate of analysis.
What no test on the vial can establish. A perfect certificate confirms that a vendor sold the correct molecule at the stated quantity. It says nothing about efficacy, dosing, or long-term safety.

Want a vial tested yourself? How to send a peptide for independent HPLC testing.