GLP-1 Peptide Testing:
Semaglutide, Tirzepatide & More
The GLP-1 peptide market has exploded in demand — and so has the risk of underdosed, mislabeled, or counterfeit products. Our third-party testing provides the HPLC purity percentage, mass spectrometry identity confirmation, and net peptide content your customers need to trust your product.
Why GLP-1 Peptide Testing Is Critical
Purity Verification
Research-grade GLP-1 peptides vary widely in purity. HPLC testing reveals the exact purity percentage and identifies any degradation products or synthesis byproducts present in the sample.
Identity Confirmation
Mass spectrometry confirms that your product actually IS Semaglutide, Tirzepatide, or the claimed compound — not a cheaper analog or structurally similar substitute.
Accurate Dosing (NPC)
Net Peptide Content testing reveals the true active peptide mass per milligram. Without NPC, a 10mg vial might deliver only 6–7mg of actual active peptide due to salt content and moisture.
Customer Trust
A publicly verifiable COA from an independent ISO 9001 lab — accessible at goldstandardanalytics.com/coa-lookup — gives customers and distributors proof they cannot get from the vendor alone.
GLP-1 Compounds We Test
What's in a GLP-1 COA?
Our standard GLP-1 COA (Purity + Identity panel, from $249) includes all of the following:
Get Your GLP-1 COA Today
Purity + Identity + NPC testing from $249. Results in 5–7 business days. Publicly verifiable by your customers.
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