How to choose a peptide vendor in Australia (data-led)

There is no honest 'best vendor' list: the right vendor depends on the peptide, your batch, and what the lab data says this month. Here's the framework we use internally.

Why we don't publish a ranked list

Vendor quality changes batch-to-batch. A vendor that aced retatrutide last quarter might fail tirzepatide this quarter because they switched API source. Ranked lists become outdated the moment a single new batch ships. The honest answer is to check the data per peptide, per batch.

The 4-step vendor decision

1. Start at Verified. These vendors have a continuous independent-testing relationship with LabDoc. Every batch they ship is tested and the CoA published.
2. Filter by your peptide. A vendor great at BPC-157 may have never tested their retatrutide. Use Results to find vendors with independent data for your specific peptide.
3. Check recency. A CoA from 9 months ago tells you nothing about today's batch. Look for results dated within the last 90 days.
4. Cross-check Reddit and customer reviews. Lab data covers identity and purity; community data covers shipping, customs, and customer service.

Red flags regardless of vendor

• Only one CoA on file across an entire product catalogue.
• CoAs that all share the same batch number.
• Vendor refuses to provide the CoA for your specific batch.
• Pricing dramatically below market for the peptide in question.

What to do if your preferred vendor isn't on LabDoc

Submit one of their vials through Submit a CoA or send a fresh sample via Sample Testing. One vial of independent data is worth more than any number of testimonials.