Grey Axis Research vs Peptide Partners
Across the 1 product both vendors stock, Grey Axis Research has the lower effective price per mg on 1 and Peptide Partners on 0. Grey Axis Research lists 59 tracked listings across 1 product; Peptide Partners lists 116 across 21. On certificates of analysis the in-stock products we track rate none found at Grey Axis Research and broad at Peptide Partners. 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.
We hold limited price data for Grey Axis Research, so parts of this comparison are thinner than usual.
Grey Axis Research is a US research-peptide vendor based in Fort Worth, TX that lists 5 injectable peptides, including Retatrutide.
- Price vs market median
- 47% below market
- Tracked catalog
- 1 products · $
- Cheaper on
- 1 of 1 shared
- COA coverage
- None found
Peptide Partners is a US research-peptide vendor based in Sarasota, FL that lists 85 injectable peptides.
- Price vs market median
- 5% above market
- Tracked catalog
- 21 products · $$
- Cheaper on
- 0 of 1 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 Grey Axis Research and 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
20 products the other vendor does not list
- 5-Amino-1MQ$1.95
- BPC-157$1
- CJC-1295 (no DAC)$4.44
- DSIP$6.10
- Epitalon$1.98
- Ipamorelin$2.89
- KPV$3.20
- MOTS-c$2
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Grey Axis Research cheaper than Peptide Partners?
- On the 1 product both vendors stock, Grey Axis Research has the lower effective price per mg on 1 and Peptide Partners 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?
- Grey Axis Research: none found, newest test dated 2026-04-24. Peptide Partners: broad, newest test dated 2026-10-01. 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 Grey Axis Research and Peptide Partners?
- Grey Axis Research: shipping $13.5, 2-5 days in transit, accepts card, zelle, ach, crypto. Peptide Partners: we have not recorded shipping or payment details yet. Details come from each vendor's own site and can change without notice; check the storefront before ordering.