Peptide Partners vs Peptides Greyhouse
Across the 20 products both vendors stock, Peptide Partners has the lower effective price per mg on 20 and Peptides Greyhouse on 0. Peptide Partners lists 113 tracked listings across 21 products; Peptides Greyhouse lists 93 across 63. On certificates of analysis the in-stock products we track rate broad at Peptide Partners and none found at Peptides Greyhouse. 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.
Peptide Partners is a US research-peptide vendor based in Sarasota, FL that lists 86 injectable peptides.
- Price vs market median
- 3% above market
- Tracked catalog
- 21 products · $$
- Cheaper on
- 20 of 20 shared
- COA coverage
- Broad
Peptides Greyhouse is a research-peptide vendor that lists 93 injectable peptides, including Selank, Semax and Epitalon.
- Price vs market median
- 7% above market
- Tracked catalog
- 63 products · $$$
- Cheaper on
- 0 of 20 shared
- COA coverage
- None found
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Peptide Partners 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 Peptide Partners
1 product the other vendor does not list
Only at Peptides Greyhouse
43 products the other vendor does not list
- FOXO4-DRI$27.60
- Melanotan II$3.40
- NAD+$0.27
- Pinealon$2.25
- Selank$1.90
- TB-500$12.40
- Thymosin Alpha-1$10.50
- Adamax$7.50
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Partners cheaper than Peptides Greyhouse?
- On the 20 products both vendors stock, Peptide Partners has the lower effective price per mg on 20 and Peptides Greyhouse on 0. 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?
- Peptide Partners: broad, newest test dated 2026-09-17. Peptides Greyhouse: none found. 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.
- What does each vendor carry?
- Peptide Partners has 21 priced products in the current index and Peptides Greyhouse has 63, 20 of which appear on both catalogs. 1 product are listed only by Peptide Partners and 43 only by Peptides Greyhouse.