Certificate of Analysis
Tesamorelin 5mg
Third-party HPLC and mass spectrometry verification. Independent analysis by MZ Biolabs in Tucson, AZ. Lot PEP-04-26 confirmed at 99.97% purity.
Tested By
MZ Biolabs
Method
HPLC-UV + MS
Signed By
Ken Pendarvis, ChE
Analyzed
May 12, 2026
The Document
Original Certificate from MZ Biolabs
Below is the unaltered Certificate of Analysis issued by MZ Biolabs on May 27, 2026. Every page is reproduced as the lab provided it, including the original signature and laboratory branding.
This Certificate is the property of Spartan Peptides and is reproduced for verification purposes only. Reuse without permission is prohibited.
Test Results Summary
What the Lab Found
HPLC Purity
99.97%
Target peptide as a percentage of the sample, measured by high-performance liquid chromatography.
Expected Mass
5132.72 Da
Theoretical molecular mass of Tesamorelin based on the published sequence.
Measured Mass
5132.83 Da
Mass detected by HPLC-MS analysis. Identity confirmed within typical instrument tolerance.
Lot Number
PEP-04-26
Production batch identifier. Each lot has its own COA. Customers can verify they received this lot via support.
About This Compound
Tesamorelin (GHRH analog)
This Certificate of Analysis applies to lot PEP-04-26 of Tesamorelin 5mg, produced via solid phase peptide synthesis and lyophilized for stable research storage. CAS 901758-09-6. The lot was submitted to MZ Biolabs for independent HPLC purity analysis and mass spectrometry identity confirmation before it was approved for release.
Tesamorelin is commonly used in research areas including Growth hormone research, body composition studies. Tesamorelin is supplied for laboratory and in vitro research purposes only.
About the Laboratory
Tested by MZ Biolabs
MZ Biolabs is an independent analytical laboratory based in Tucson, Arizona, specializing in HPLC and mass spectrometry analysis of peptides and small molecules. MZ Biolabs is headquartered at 2102 N Country Club Rd, Tucson, AZ 85716. Spartan Peptides has no ownership or financial relationship with MZ Biolabs beyond paying for testing services. Every Certificate of Analysis is signed directly by the laboratory’s analytical chemist.