Peptides Source vs Prime Peptides
Across the 16 products both vendors stock, Peptides Source has the lower effective price per mg on 11 and Prime Peptides on 4, and 1 prices the same to the cent. Peptides Source lists 98 tracked listings across 45 products; Prime Peptides lists 23 across 16. On certificates of analysis the in-stock products we track rate none found at Peptides Source and partial at Prime Peptides. Based on the certificates our crawler found; vendors may publish more than we index. These are price and document observations, not quality ratings, and neither vendor is endorsed.
Peptides Source is a research-peptide vendor that lists 97 injectable peptides, including NAD+, Epitalon and KPV.
- Price vs market median
- 4% below market
- Tracked catalog
- 45 products · $$
- Cheaper on
- 11 of 16 shared
- COA coverage
- None found
Prime Peptides is a US research-peptide vendor based in Santa Barbara, CA that lists 22 injectable peptides.
- Price vs market median
- 20% above market
- Tracked catalog
- 16 products · $$$
- Cheaper on
- 4 of 16 shared
- COA coverage
- Partial
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Prime Peptides were extracted from the vendor's site and not yet reviewed by us.
Certificates on file
Coverage rates how many of the in-stock products we track have a certificate our pipeline read and matched to a catalog peptide. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products, and a certificate cannot show authenticity, chain of custody or sterility.
Carried by one vendor only
Only at Peptides Source
29 products the other vendor does not list
- 5-Amino-1MQ$1.30
- CJC-1295 (no DAC)$6
- DSIP$7
- Epitalon$1.30
- KPV$6
- Pinealon$4.50
- PT-141$5
- Selank$5
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptides Source cheaper than Prime Peptides?
- On the 16 products both vendors stock, Peptides Source has the lower effective price per mg on 11 and Prime Peptides on 4, with 1 priced the same to the cent. Each side uses the cheapest in-stock listing we track for that product, after any public discount code, and prices change often.
- How much COA coverage does each vendor have?
- Peptides Source: none found. Prime Peptides: partial, newest test dated 2026-10-06. Based on the certificates our crawler found; vendors may publish more than we index. We do not test products ourselves, and a certificate cannot prove authenticity or sterility.
- How do shipping and payment differ between Peptides Source and Prime Peptides?
- Peptides Source: we have not recorded shipping or payment details yet. Prime Peptides: ships from California, USA, 2-2 days in transit. Details come from each vendor's own site and can change without notice; check the storefront before ordering.