Buy P21 from Prime Source
Prime Source is a vendor. The current indexed P21 listings at Prime Source start at $115.00 per vial ($23.00/mg), and this profile compares those listings against other indexed vendors. Our automated check found that Prime Source does not show a COA or lab-results link on its homepage (checked Nov 13, 2026). Use the live product page to confirm current documentation before purchasing for lawful research use.
Prime Source P21 Listings
| Size | Pack | Price | Per vial | Per mg | Stock | Buy |
|---|---|---|---|---|---|---|
| 5 mg | 1 vial | $115.00 | $115.00 | $23.00 | Yes | Visit (Prime Source, opens in a new tab) |
Prices are the store's listed price when we last checked; click through to the vendor for live pricing. Per vial = pack price ÷ vials in the pack; $/mg uses the per-vial price.
How Prime Source's P21 Price Compares
Prime Source's lowest single-vial P21 price is 21.7% above the current indexed single-vial market median of $94.50. This page tracks $115.00 per vial at Prime Source, with the lowest listing at $23.00/mg.
Cheaper P21 Alternatives
| Vendor | Single-vial price | Offer Page |
|---|---|---|
| Real Peptides | $38.40 | Compare offer → |
| PurePeptides | $44.00 | Compare offer → |
| Disguised Alpha | $59.99 | Compare offer → |
| Nootropic Source | $64.95 | Compare offer → |
| Evolve BioPep | $69.99 | Compare offer → |
Prime Source Vendor Facts
- Location
- Unknown
- Domain registered (RDAP)
- Jan 2026
- Payment methods (detected on vendor homepage)
- Not recorded
- COA or lab-results link (on vendor homepage)
- Not found (checked Nov 13, 2026)
- Price per mg vs Market Median
- 22% above median (27 compounds)
- Last Checked
- Nov 10, 2026
- Full Profile
- Read the Prime Source profile →
Related Resources
Disclaimer: This site is for informational purposes only. Not medical advice. Compounds listed in this directory are sold by third parties for laboratory research, not for use in people or animals.