Tirzepatide — lab test, January 2026

Name: Tirzepatide Purity Analysis -
Creator: Krause Analytical
Published: 2026-01-19
License: https://creativecommons.org/licenses/by/4.0/

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Tested Monday, January 19, 2026 · 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

99.66%

✓ Excellent purity only

PeptideTirzepatide

BrandShop withheld

LabKrause Analytical

↓ Download COA

Independently confirmed on the lab’s portal✓ Extra check

COA 132579 matches Krause Analytical's public record. So this test doesn't rest on our review alone — the lab confirms it too.

Lookup codege4cj34

Look it up on Krause Analytical ↗Checked Jan 19, 2026

Test results

8 data points

Purity

99.66%

Endotoxins

<0.5 EU/mL

Heavy metals

Arsenic ND, Cadmium ND, Lead ND, Mercury ND

Stated qty

20 mg

Tested qty

20.8 mg

Qty match

104% of labeled · +4%

Batch / Lot

ge4cj34

COA number

132579

Tested by

Krause AnalyticalView profile →

About this test

What’s in the vial

Label 20 mg · Lab measured 20.8 mg

104% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 5.2 mg using the measured mass, against 5 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.

Verification trail

Report number	132579
Portal lookup	✓ Lab-verified
Checked	21 Aug 2026date taken from the record, not from a logged check
Checked by	Peptigrity staff, against the lab's portal
PDF vs portal	Krause Analytical's portal shows validity only
Weight	Counts as one lab test

Independent HPLC purity analysis of Tirzepatide, performed by Krause Analytical on January 19, 2026. Reported purity: 99.66%. Net content: 20.8 mg against 20 mg labeled (104% of label). Endotoxins: <0.5 EU/mL. Heavy metals: Arsenic ND, Cadmium ND, Lead ND, Mercury ND. Batch ge4cj34. Sample source: shop-provided. Certificate of analysis attached.