Semaglutide testing in Australia: purity, identity & dose verification
Semaglutide is the most counterfeited GLP-1 peptide on the Australian grey market. This guide explains how independent labs verify identity and purity, what numbers to expect on a real CoA, and why Australian testing matters when the vial was shipped from overseas.
Why Semaglutide testing matters
Semaglutide (the active in Ozempic and Wegovy) is one of the most counterfeited research peptides on the global grey market. Vials that arrive in Australia from overseas labs can contain under-dosed peptide, the wrong GLP-1 analog entirely, or filler sugars masquerading as a 5 mg or 10 mg vial. The only way to know what's in a vial is an independent identity and purity test on the exact batch you received.
The two tests that matter
Identity: LC-MS
Liquid Chromatography-Mass Spectrometry confirms the molecule in the vial matches the theoretical mass of Semaglutide (4113.58 Da, monoisotopic). A pass means the vial actually contains Semaglutide, not Tirzepatide, not Liraglutide, and not a generic GLP-1 lookalike.
Purity: HPLC
High-Performance Liquid Chromatography reports purity as a percentage of the total peak area. A research-grade Semaglutide vial should read 97% or higher. Anything under 95% suggests degraded peptide, poor synthesis, or contamination from related impurities.
What a good Semaglutide CoA looks like
Identity: measured mass 4113-4114 Da, matched to Semaglutide reference
Purity: ≥97.0% by HPLC, with a single dominant peak
Peptide content: within ±5% of the labelled mg per vial
Batch number printed on both the CoA and the vial
Lab name & date: issued by a third-party lab, not the vendor
LabDoc vs Janoshik & overseas labs
Janoshik (Czechia) is the most-cited overseas lab for grey-market peptides. Their results are technically sound, but shipping vials from Australia to Europe takes 2-4 weeks, costs €40: €80, and the vial leaves your control. LabDoc runs the same LC-MS identity and HPLC purity tests through Australian partner labs, with the sample staying in-country and results published in days, not weeks.
Ship the vial with the bottom half of the included packing slip inside the parcel
LabDoc receives, logs, and forwards to the partner lab for LC-MS + HPLC
You get a verifiable CoA with a public link, embeddable on any vendor's site
Frequently asked questions
How much does Semaglutide testing cost in Australia?
LabDoc tests a single Semaglutide vial for A$549, which covers LC-MS identity, HPLC purity and quantitative content on the exact batch you submit. Endotoxin and contaminants are optional add-ons per vial.
How long does testing take?
Most Semaglutide CoAs are published within 3-7 business days of the vial arriving at LabDoc's Australian intake address. Janoshik and overseas labs typically take 3-5 weeks once shipping is included.
What purity should I expect on a real Semaglutide vial?
A research-grade Semaglutide vial should read 97% or higher by HPLC, with a clear single peak and a measured mass within a few daltons of 4113.58 Da on LC-MS.
Can I publish the CoA on my vendor's site?
Yes: every LabDoc CoA has a public verification URL and an embed link any vendor can drop into a product page, so customers can confirm the result came directly from the lab.