What a peptide test measures
A peptide test answers two separate questions. Identity asks whether the material is the peptide named on the label. Labs usually answer it with mass spectrometry, which measures the mass of the molecule and compares it with the mass expected from the peptide's sequence; Flinders University's analytical facility, for example, says the mass of peptides under 4,000 Da can be determined to within 0.2 Da (Flinders Analytical). Purity asks what share of the material the detector recorded is that peptide. It is usually measured by high-performance liquid chromatography (HPLC), which separates the compounds in a dissolved sample so each can be recorded (LibreTexts, UC Davis).
The two results can disagree. A vial can be highly pure and still hold the wrong peptide, or hold the right peptide alongside near-identical by-products. A review of impurities in peptide medicines lists deletion and insertion of amino acids, racemised residues, oxidation, dimers and leftover counter-ions such as trifluoroacetate among the common types (D’Hondt et al., Journal of Pharmaceutical and Biomedical Analysis, 2014). Peptide chromatographers Mant and Hodges note that synthesis impurities are usually closely related to the target, "missing perhaps only one amino acid residue", and can be hard to separate (Mant and Hodges, Journal of Separation Science, 2008). That is why most peptide reports pair an HPLC purity figure with a mass spectrometry identity check.
Some questions need different tests altogether. How much peptide is in the vial needs its own quantitative method, and sterility and bacterial endotoxin are microbiology tests. The TGA says it has not assessed unapproved peptide products for quality, safety or effectiveness (TGA, How we regulate therapeutic peptide products), so none of those things can be assumed from the label.
Why most large labs work for industry
Read the directory above and a pattern appears. Chemika and Eurofins test peptides as part of quality control for regulated medicines, under TGA licences and GMP certificates. Agilex Biolabs and BioAgilytix measure peptide drugs in blood samples for clinical trials. RASL and ChemCentre look for prohibited peptides in racing, sport and seized material. Proteomics International, Leeder Analytical, SGS and Flinders Analytical characterise peptides for researchers and manufacturers.
Those labs work on quotations, purchase orders and contracts. Proteomics International starts projects on a signed quotation and purchase order number (Proteomics International), Flinders Analytical asks external clients to email for a quote (Flinders University), and Chemika's peptide page says it does not accept samples from members of the public or test peptides bought from overseas suppliers or online vendors (Chemika). None of the ten says on its website that it will take a vial from a private individual.
That leaves a gap for the person who already has a vial and wants to know what is in it. Peptide Testing Australia is built for that case: you can order an identity and purity test for a single vial, post it from anywhere in Australia and receive a Certificate of Analysis for that vial. It does not sell or source peptides and does not give medical advice. It is the entry marked as our specialist pick for personal samples.
How to read the directory
Each spec card has the same five rows. City gives the sites the lab names on its own pages. Peptide services paraphrases what the lab says it does with peptides, which is often bioanalysis or doping control rather than checking what is in a vial. Accreditation repeats what the lab states, with a NATA number where one is published. Accepts personal samples? reports whether the lab says it takes samples from individuals; "Not stated" means we found no statement either way. How to get a quote gives the contact route the lab publishes.
The glance table under the cards gives the same information in one view. Prices are shown only where a provider publishes them, which in this directory is the specialist pick alone.
Choosing a lab: five questions to ask
- Does the lab test what is in a vial, or something else? Bioanalysis (a peptide drug in blood) and anti-doping screens (a banned peptide in urine or a supplement) use the same kinds of instruments as purity testing but answer different questions. Read the lab's own description of the service.
- Will it accept your sample? An industry lab may need a company name, a purchase order or a regulated product. Ask before you post anything.
- Which methods will it run? For a single peptide, look for HPLC for purity and mass spectrometry, often LC-MS, for identity. A blend of several peptides in one vial needs more analysis.
- Is the test on its accreditation scope? NATA accredits labs for the methods listed on their scope of accreditation, and the NATA endorsement is not permitted on reports of testing outside that scope (NATA, test reports explained). You can look a lab up on NATA’s register of accredited organisations.
- What will the report show, and when? Ask for a sample report. It should name the lab, the sample, the methods, the results with units, the dates and who authorised it. Our report on accreditation and lab reports has a checklist.
What testing can and cannot change
A lab result describes a sample. It does not change a product's legal or regulatory position. The TGA says disclaimers such as "research use only" or "not for human use" do not change whether a product is regulated as a therapeutic good (TGA). In sport, BPC-157 is named in the S0 non-approved substances class of the World Anti-Doping Agency's Prohibited List, which is prohibited at all times (WADA Prohibited List).
Testing does show why a label is not evidence. In September 2026 the TGA reported that it had tested a product sold as retatrutide after a serious adverse event: it contained no retatrutide, and held semaglutide at about eight times the level found in semaglutide products the TGA has assessed (TGA safety alert). In a 2024 US study, researchers ordered semaglutide from six online sellers that did not ask for a prescription; three delivered, the measured semaglutide content of those vials was 29 to 39 per cent above the label, and one sample showed elevated endotoxin (Ashraf et al., JAMA Network Open, 2024).
Neither finding tells you what is in a particular vial. Only a test of that vial can.
What peptide testing costs
Peptide Testing Australia publishes its price: A$575 per vial including GST, with periodic discounts, 10 per cent off each extra vial in the same order, and A$185 extra when one vial holds a blend of peptides. Turnaround is approximately 5-7 business days plus postage. The ten larger labs in the directory do not publish prices; ChemCentre's FAQ, for example, says its staff will be happy to discuss pricing (ChemCentre FAQ). Our report on peptide testing costs works through what goes into a lab quote and what to ask.
How this directory was built
The desk started from laboratories that say on their own websites that they test, analyse or characterise peptides, and kept those with Australian sites that do not publish prices. Every fact in an entry (city, services, accreditation, who the lab takes samples from and how to get a quote) comes from the lab's own pages, read on 5 November 2026. Where a lab did not say something, the entry says "not stated" rather than guessing.
Accreditation is reported as each lab states it, and NATA numbers can be checked on NATA's public register. We did not contact the labs for this edition. Entries are updated when a lab's own pages change, and the date at the top of this page shows the last full check. Corrections are welcome through the contact page.
Reader questions
Q.01How much does peptide testing cost in Australia?
Peptide Testing Australia lists A$575 per vial including GST, with periodic discounts, 10% off each extra vial in the same order and A$185 extra for a blend in one vial. The larger analytical labs quote per job and do not publish prices.
Q.02Can I get my peptides tested in Australia?
Yes, through a provider that accepts samples from individuals. Peptide Testing Australia accepts vials posted from within Australia. Most large analytical labs work with business clients, and Chemika says it does not accept samples from the public, so ask any other lab before you send anything.
Q.03How do I know if my peptides are pure?
Only a laboratory test of the vial can tell you. HPLC gives a purity figure and mass spectrometry confirms the peptide's identity. Colour, clarity and packaging tell you nothing reliable, and a supplier's certificate describes the batch the supplier says it tested, not necessarily your vial.
Q.04Is 95% purity good for a peptide?
A 95% HPLC figure means the main peak made up 95% of the material the detector recorded. On its own it does not confirm the peptide's identity, and it does not measure everything in the vial, such as counter-ions left from synthesis or bacterial endotoxin. Read it together with the identity result.
Q.05Can I test peptides at home?
Not in a way that answers identity or purity. A colour reagent such as biuret reacts with peptide bonds, so it reacts to almost any peptide or protein. Our report on test kits and lab tests explains the difference.
Q.06How long does peptide testing take?
Peptide Testing Australia states approximately 5-7 business days plus postage. The larger labs set turnaround in their quote.
Q.07How do you legally get peptides in Australia?
We do not cover sourcing. On the legal position, the TGA says it has not assessed unapproved peptide products for safety, quality or effectiveness and advises using only products supplied through Australian pharmacies; its peptide products page collects its guidance. Talk to a doctor or pharmacist.
References
- TGA: How we regulate therapeutic peptide productsRegulatory status, 'research use only' labels, unapproved products
- TGA: TGA tests counterfeit retatrutide product following serious adverse event reportLaboratory finding: semaglutide in a product sold as retatrutide
- TGA: Warning on the risks of importing unapproved peptide productsImport and labelling rules
- NATA: Testing and calibration (ISO/IEC 17025) accreditationWhat accreditation covers
- NATA: NATA test reports explainedEndorsement and report requirements
- NATA: Search accredited organisationsCheck a lab's accreditation and scope
- World Anti-Doping Agency: The Prohibited ListS0 and S2 classes
- Mant and Hodges, mixed-mode HILIC/CEX for peptides, Journal of Separation Science (2008)Reversed-phase HPLC for peptides; closely related impurities
- D'Hondt et al., Related impurities in peptide medicines, J Pharm Biomed Anal (2014)Types of peptide impurities
- Ashraf et al., Safety and risk assessment of no-prescription online semaglutide purchases, JAMA Network Open (2024)Test purchases and lab results
- LibreTexts (UC Davis): High performance liquid chromatographyHow HPLC separates compounds
- Flinders Analytical, Flinders UniversityPeptide molecular weight by mass spectrometry
