Tirzepatide — Allen Biotechnology Co AbcCertificate of Analysis · Independent third-party lab result

Extracted via OCR. Names, emails, phone numbers, and street addresses are auto-redacted before display.

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m/[NAME_REDACTED]
201370 47 (0.869)
100-
[PHONE_REDACTED]
900 1000
Tirzepatide 30 (0.555)
100-
968 [PHONE_REDACTED]
1116 1144
1100
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1205
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1217 1279
1300
1322 1410
1400
1216
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1606 1621
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1606 1628
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1713 1797 1807 1863 1886
1800
m/z
Scan ES+
4.08e5
1700
1713 1796 1807 1863 1896
1800
m/z
Scan ES+
4.14e5
Krause Analytical, LLC [ADDRESS_REDACTED] B-206 Austin, TX 78759 [EMAIL_REDACTED]
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Page 3 of 3
Methods Summary
Purity/Potency/Identification
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USP/NF 621
2 mL of purified water is added to the lyophilized powder in the vial, and the contents mixed to
dissolve the lyophilized powder.
An aliquot is taken from the vial and diluted to contain approximately 500 mg/L of the peptide.
The diluted sample is analyzed by HPLC-UV-MS.
The mass spectrum obtained is compared to an authentic standard of the peptide for
identification.
The total area of all of the peaks in the chromatogram is calculated, and the area of the peak of
the peptide is divided by the total area to obtain the chromatographic purity value, reported in
percent.
The area of the peptide is compared to the area of the peptide peak in the known standard to
obtain a concentration in the solution. This concentration is used to calculate the total mass of
peptide in the vial, which is compared to the stated mass (label claim) and reported as both total
mass in the vial and as a percent of the label claim.
Endotoxins
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USP/NF 85
2 mL of purified water is added to the lyophilized powder in the vial, and the contents mixed to
dissolve the lyophilized powder.
An aliquot is taken from the vial and diluted in endotoxin-free water.
The diluted sample is analyzed for endotoxins using the LAL method.
Metals
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USP/NF 233
2 mL of purified water is added to the lyophilized powder in the vial, and the contents mixed to
dissolve the lyophilized powder.
An aliquot is taken from the vial and diluted in deionized water.
The diluted aliquot is analyzed against known standards by ICP-MS
Krause Analytical, LLC [ADDRESS_REDACTED] B-206 Austin, TX 78759
Finnrick Testing Certificate © 2026 Finnrick Analytics LLC and its suppliers, all rights reserved. Unauthorized distribution and modification prohibited.
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