Peptides Greyhouse vs peptidology
Across the 40 products both vendors stock, Peptides Greyhouse has the lower effective price per mg on 11 and peptidology on 28, and 1 prices the same to the cent. Peptides Greyhouse lists 93 tracked listings across 63 products; peptidology lists 78 across 44. On certificates of analysis the in-stock products we track rate none found at Peptides Greyhouse and broad at peptidology. 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 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
- 11 of 40 shared
- COA coverage
- None found
peptidology is a US research-peptide vendor based in Scottsdale, AZ that lists 61 injectable peptides and 1 capsule.
- Price vs market median
- 11% below market
- Tracked catalog
- 44 products · $
- Cheaper on
- 28 of 40 shared
- COA coverage
- Broad
Vendor facts
Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for peptidology 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 Greyhouse
23 products the other vendor does not list
- PT-141$3.90
- Retatrutide$12.67
- Semax$2.40
- SS-31$4.67
- Tirzepatide$11.83
- Adamax$7.50
- Adipotide$7.60
- Cagrilintide$15
Only at peptidology
4 products the other vendor does not list
- ACE-031$159
- Follistatin$143.99
- Melanotan I$3.45
- Vasoactive Intestinal Peptide (VIP)$6.39
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptides Greyhouse cheaper than peptidology?
- On the 40 products both vendors stock, Peptides Greyhouse has the lower effective price per mg on 11 and peptidology on 28, 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 Greyhouse: none found. peptidology: broad, newest test dated 2026-09-25. 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 Greyhouse and peptidology?
- Peptides Greyhouse: we have not recorded shipping or payment details yet. peptidology: ships from Scottsdale, AZ. Details come from each vendor's own site and can change without notice; check the storefront before ordering.