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Purity · passShop-provided sample

Tirzepatide × Penguin Peptides — Lab Test, January 2026

Tested · submitted by @Frank 👑 Legend
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
99.62%
Excellent purity only
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Test results

5 data points
Purity
99.62%
Endotoxins
Not tested
Heavy metals
Not tested
Stated qty
5 mg
Tested qty
5.37 mg
Qty match
107% of labeled · +7%
0label125%
Batch / Lot
N/A
Tested by
Janoshik LabsView 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

Independent HPLC purity analysis of Tirzepatide from Penguin Peptides, performed by Janoshik Labs on January 20, 2026. Reported purity: 99.62%. Net content: 5.37 mg against 5 mg labeled (107% of label). Sample source: shop-provided. Certificate of analysis attached.

Certificate of analysis

Original document
Certificate of analysis for Tirzepatide 5mg from Penguin Peptides showing 99.627% purity
Issued by Janoshik Labs · Jan 20, 2026 · Batch N/A

Related lab tests

8 tests

The 833 other Tirzepatide tests on Peptigrity range from 98.00% to 100.00%. This one sits at 99.62%.

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