✓ Purity · pass✓ Lab-verifiedShop-provided sample

Tirzepatide — lab test, September 2026

Name: Tirzepatide Purity Analysis -
Creator: Janoshik Labs
Published: 2026-09-17
License: https://creativecommons.org/licenses/by/4.0/

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Tested Thursday, September 17, 2026 · submitted by @Henrik 💬 Contributor

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

99.645%

✓ Excellent purity only

PeptideTirzepatide

BrandShop withheld

LabJanoshik Labs

↓ Download COA

Independently confirmed on the lab’s portal✓ Extra check

COA 233574 matches Janoshik Labs's public record. So this test doesn't rest on our review alone — the lab confirms it too.

Lookup code471ZHBJL358C

Look it up on Janoshik Labs ↗Checked Sep 17, 2026

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Test results

6 data points

Purity

99.645%

Endotoxins

Not tested

Sterility

Not on file

Heavy metals

Not tested

Stated qty

20 mg

Tested qty

19.6 mg

Qty match

98% of labeled · -2%

Batch / Lot

09-2026-H06

COA number

233574

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 20 mg · Lab measured 19.6 mg

98% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 4.9 mg using the measured mass, against 5 mg on the label — 2% less.

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 number	233574
Portal lookup	✓ Lab-verified
PDF vs portal	Janoshik Labs's portal shows validity only
Weight	Counts as one lab test

Independent HPLC purity analysis of Tirzepatide, performed by Janoshik Labs on September 17, 2026. Reported purity: 99.645%. Net content: 19.6 mg against 20 mg labeled (98% of label). Batch 09-2026-H06. Sample source: shop-provided. Certificate of analysis attached.