Peptide Works vs Tetrava Labs
Across the 3 products both vendors stock, Peptide Works has the lower effective price per mg on 3 and Tetrava Labs on 0. Peptide Works lists 92 tracked listings across 50 products; Tetrava Labs lists 101 across 3. On certificates of analysis the in-stock products we track rate broad at Peptide Works and none found at Tetrava Labs. 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 Works is a research-peptide vendor that lists 82 injectable peptides, including PT-141, Melanotan II and GHK-Cu.
- Price vs market median
- 17% below market
- Tracked catalog
- 50 products · $
- Cheaper on
- 3 of 3 shared
- COA coverage
- Broad
Tetrava Labs is a research-peptide vendor that lists 6 injectable peptides, 1 capsule and 2 nasal sprays, including CJC-1295 (no DAC).
- Price vs market median
- 46% above market
- Tracked catalog
- 3 products · $$$
- Cheaper on
- 0 of 3 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 Works 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 Works
47 products the other vendor does not list
- BPC-157$4.16
- DSIP$6.36
- Epitalon$1.14
- FOXO4-DRI$23.91
- GHK-Cu$0.61
- Ipamorelin$5.50
- KPV$8.26
- Melanotan II$2.40
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Works cheaper than Tetrava Labs?
- On the 3 products both vendors stock, Peptide Works has the lower effective price per mg on 3 and Tetrava Labs 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 Works: broad, newest test dated 2025-09-21. Tetrava Labs: 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.
- How do shipping and payment differ between Peptide Works and Tetrava Labs?
- Peptide Works: accepts card, zelle, wire, crypto. Tetrava Labs: 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.