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✗ Purity · below spec✓ Lab-verifiedShop-provided sample

ARA-290 × Uther — lab test, February 2026

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Tested · submitted by @uther 👑 Legend
Sample source: shop-provided. The shop chose and sent this vial. The Trust Score counts it like any other published test; who sourced the vial is shown so you can weigh it yourself.How we weigh evidence →
HPLC Purity
86.222%
✗ Below spec purity only
PeptideARA-290
BrandUther
See Uther reviews & all 146 lab tests
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Independently confirmed on the lab’s portal✓ Extra check

COA 107265 matches Janoshik Labs's public record. So this test doesn't rest on our review alone — the lab confirms it too.

Lookup codeHKSLYGZBJKK6

Test results

6 data points
Purity
86.222%
Endotoxins
Not tested
Sterility
Not on file
Heavy metals
Not tested
Stated qty
16 mg
Tested qty
16.28 mg
Qty match
102% of labeled · +2%
Batch / Lot
ARA16-0202
COA number
107265
Tested by
Janoshik LabsView profile →

Not on file for this certificate: endotoxins, sterility and heavy metals. A purity figure says nothing about those.

About this test

What’s in the vial

Label 16 mg · Lab measured 16.28 mg

102% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 4.1 mg using the measured mass, against 4 mg on the label — 2% 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.

Verification trail
Report number107265
Portal lookup✓ Lab-verified
PDF vs portalJanoshik Labs's portal shows validity only
Submitted viaShop panel (bulk upload)
WeightCounts as one lab test

Independent HPLC purity analysis of ARA-290 from Uther, performed by Janoshik Labs on February 16, 2026. Reported purity: 86.222%. Purity falls below the 95% specification commonly applied to research peptides. Net content: 16.28 mg against 16 mg labeled (102% of label). Batch ARA16-0202. Sample source: shop-provided. Certificate of analysis attached.

Certificate of analysis

Original document
Issued by Janoshik Labs · Feb 16, 2026 · Batch ARA16-0202

Related lab tests

6 tests

The 96 other ARA-290 tests on Peptigrity range from 53.90% to 99.99%. This one sits at 86.22%.

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