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Composite COA score

70/ 100Grade C

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Avg purity

Safety panel

Lab corroboration

Forgery risk

100

Tirzepatide

Lot 4 · tested by Janoshik Analytical · 2026-04-13 · sold by Qihang Peptide

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99.64%

Purity

22.81 mg

Net peptide

—

Mass spec

—

Endotoxin

Tests reported

HPLC purity

99.644%

Mass spec / LC-MS

—

FTIR identity

—

Endotoxin (LAL)

—

Sterility

—

Heavy metals

—

Tested by

Janoshik Analytical

909 COAs indexed · std dev 2.09% · CZ

Same lot number on other vendors

The lot number 4 also appears on 2 COAs from other vendors. Same-lot-across-multiple-vendors is a cross-vendor signal we flag on the Forgery Map.

Vendor	Lab	Peptide	Purity	Provenance
HongDa Peptide	Janoshik Analytical	MOTS-C	99.66%	Confirmed by Janoshik Analytical
DongCheng Peptide	Janoshik Analytical	GHK-CU	99.60%	Confirmed by Janoshik Analytical

Source

We discovered this COA on the vendor's public site.

First indexed 2026-04-29 · extracted 2026-05-24

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Label history

No archived listing available for this COA's test date.

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