🥊 US Peptide Labs vs popular peptide brands
Last updated November 10, 2026
Three US research suppliers that list a triple-agonist compound. Here is what each one publishes about it.
Side by side
| 🇺🇸 US Peptide Labs | American Peptides | Real Peptides | |
|---|---|---|---|
| Triple-agonist listing | GLP-3RT | AP-RTA-3 | GLP3-RT (Trinity-X) |
| Starting price | $100 (10 mg) | from $105 | $4.99 per mg (sale price) |
| Vial sizes | 10, 20, 40 mg | 10 to 60 mg lots | 10, 20, 30 mg |
| Lowest listed price per mg | $7.50 (40 mg vial) | not listed per size | $4.99 (sale) |
| Stated purity | 99%+ | 99%+ | 99.29% (COA) |
| Outside lab named | AxisPharm | Bioviridian | Freedom Diagnostics, Kovera |
| COA per lot | Yes | Yes | Yes |
| QR code on the vial opens its COA | Yes | not stated | not stated |
| Nasal and oral spray formats | Yes, both | not listed | not listed |
| Free US shipping from | $70 | $300 | $250 |
| Ships from | US facility | Louisiana | Florida and California |
Figures as listed on each store's own website on November 10, 2026. Prices and sales change, so check before ordering. "Not stated" means we did not find it on their site.
Where each one wins
🇺🇸 US Peptide Labs
- Free shipping from $70, the lowest bar of the three
- QR code on every vial opens that lot's COA
- The only one with nasal and oral spray formats
- A 40 mg vial for larger projects
American Peptides
- Widest range of lot sizes, up to 60 mg
- Endotoxin screening listed alongside purity
Real Peptides
- Lowest price per mg while its sale runs
- Stock held on both coasts
Our pick
All three publish lot COAs from an outside lab, which is the baseline. We feature US Peptide Labs because it is the easiest to buy from and verify: a small order still ships free, the certificate is one scan away from the vial in your hand, and it is the only one of the three with needle-free formats. If price per milligram is the only thing you care about, Real Peptides is cheaper today while its sale lasts.
GLP-3RT Vial
★★★★★4.8/5 editorial scoreThe compound behind the biggest weight-trial numbers of the decade. Three receptors, one molecule, 13 lots with a COA on file.
GLP-2T Vial
★★★★★4.7/5 editorial scoreThe dual-agonist molecule with the deepest published record: 72-week data, a head-to-head win and the lowest price per mg in the catalog.
FAQ
Why only three brands?
We only list what we could read on a store's own site on the day of the check. Several other stores did not show their listings or documentation publicly, so we left them out.
How often is this updated?
We re-check the listings monthly and change the date under the table.