Peptide Supply Co vs Skye Peptides
Across the 33 products both vendors stock, Peptide Supply Co has the lower effective price per mg on 24 and Skye Peptides on 9. Peptide Supply Co lists 69 tracked listings across 54 products; Skye Peptides lists 91 across 37. On certificates of analysis the in-stock products we track rate broad at Peptide Supply Co and limited at Skye 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.
Peptide Supply Co is a US research-peptide vendor that lists 67 injectable peptides, 11 blends and 1 capsule.
- Price vs market median
- 20% below market
- Tracked catalog
- 54 products · $
- Cheaper on
- 24 of 33 shared
- COA coverage
- Broad
Skye Peptides is a US research-peptide vendor based in Los Angeles, California that lists 52 injectable peptides and 3 tablets.
- Price vs market median
- 7% above market
- Tracked catalog
- 37 products · $$$
- Cheaper on
- 9 of 33 shared
- COA coverage
- Limited
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 Supply Co and Skye 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 Peptide Supply Co
21 products the other vendor does not list
- NAD+$0.08
- Retatrutide$3.33
- SS-31$2.60
- Tirzepatide$1.75
- Cardiogen$2.50
- GHK-Cu + KPV$0.93
- GLOW$1.11
- Glutathione$0.04
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Supply Co cheaper than Skye Peptides?
- On the 33 products both vendors stock, Peptide Supply Co has the lower effective price per mg on 24 and Skye Peptides on 9. 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 Supply Co: broad, newest test dated 2026-09-11. Skye Peptides: limited, newest test dated 2026-06-15. 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 Peptide Supply Co and Skye Peptides?
- Peptide Supply Co: shipping free, 2-2 days in transit. Skye Peptides: accepts card. Details come from each vendor's own site and can change without notice; check the storefront before ordering.