COA/TZ-2026-002Verified
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PuriLab Analytical
Tirzepatide 20 mg
TZ-2026-002Lot TR20260907Analyzed October 9, 2026

Timeline
Ordered
October 5, 2026
Received
October 8, 2026
Analyzed
October 9, 2026
Sample
Name
Tirzepatide 20 mg
Expected
Tirzepatide
Amount
1 vial, lyophilized powder
Testing
Client
Cowtown Peptides
Test type
Content & purity
Method
HPLC-UV
Content, how much is in it
17.8mg
Label claim: 20 mg
Purity, how clean it is
99.1%
by HPLC-UV peak area
Chromatogram
HPLC-UV
19.46 min, Tirzepatide, 99.1%
Analyst Comments
White lyophilized powder, green-cap vial, received sealed.
Analyst Signature
Max Barrett
Lab Director, PuriLab Analytical
Analysis date: October 9, 2026
Verification Code
TZ-C3N7-V8JF
Verify at purilab.org/verify/TZ-C3N7-V8JF
Scan to Verify
TZ-C3N7-V8JF
Results apply solely to the sample as received and are not representative of any larger lot, batch, or production run. Findings are limited to the analytes stated above. PuriLab Analytical is an independent testing laboratory, is not CLIA certified or ISO 17025 accredited, does not sell or distribute any substance, and makes no representation as to the safety, legality, or fitness of any material for any use.
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