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Purity · passShop-provided sample

Tesamorelin × goodsciencebio.com — lab test, May 2026

Sample label: Good Science
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Tested · submitted by Peptigrity Team Member 02PEPTIGRITY TEAM
Sample source: shop-provided. The shop chose and sent this vial. Samples bought at retail by a member carry more weight.How we weigh evidence →
HPLC Purity
99.1%
Excellent purity only
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Independent verification available

Vanguard Laboratory publishes a public verification portal. Any test attributed to this lab can be looked up and confirmed directly with the lab — so this result doesn't rest on our review alone.

This certificate carries no lookup code.

Test results

7 data points
Purity
99.1%
Endotoxins
Pass - <5.00 EU/mg
Heavy metals
Not tested
Stated qty
15 mg
Tested qty
15.55 mg
Qty match
104% of labeled · +4%
Batch / Lot
3548687
Tested by
Vanguard LaboratoryView profile →

This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.

About this test

What’s in the vial

Label 15 mg · Lab measured 15.55 mg

104% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 3.9 mg using the measured mass, against 3.8 mg on the label — 4% more.

One vial from this lot was weighed by the laboratory, not yours. This page reports what the certificate says; it does not recommend a dose.

Independent HPLC purity analysis of Tesamorelin/Ipamorelin from goodsciencebio.com, performed by Vanguard Laboratory on May 27, 2026. Reported purity: 99.1%. Net content: 15.55 mg against 15 mg labeled (104% of label). Endotoxins: Pass - <5.00 EU/mg. Batch 3548687. Sample source: shop-provided. Certificate of analysis attached.

Certificate of analysis

Original document
Issued by Vanguard Laboratory · May 27, 2026 · Batch 3548687

Other lots of Tesamorelin from goodsciencebio.com

LotTestedLabPurityvs labelStatus
354842927 May 2026Vanguard Laboratory99.07%104%Unverified
354843527 May 2026Vanguard Laboratory99.2%103%Unverified
354842327 May 2026Vanguard Laboratory99%105%Unverified

Batches this shop has published a certificate for, newest first. A lot whose printed value cannot identify a batch is not listed.

Related lab tests

8 tests

The 542 other Tesamorelin tests on Peptigrity range from 88.28% to 99.99%. This one sits at 99.10%.

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