Peptide Works vs Redline Bio Labs
Across the 33 products both vendors stock, Peptide Works has the lower effective price per mg on 18 and Redline Bio Labs on 15. Peptide Works lists 92 tracked listings across 51 products; Redline Bio Labs lists 81 across 43. On certificates of analysis the in-stock products we track rate broad at Peptide Works and none found at Redline Bio 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 84 injectable peptides, including PT-141, Melanotan II and GHK-Cu.
- Price vs market median
- 19% below market
- Tracked catalog
- 51 products · $
- Cheaper on
- 18 of 33 shared
- COA coverage
- Broad
Redline Bio Labs is a research-peptide vendor that lists 77 injectable peptides, including FOXO4-DRI, Epitalon and NAD+.
- Price vs market median
- 1% below market
- Tracked catalog
- 43 products · $$
- Cheaper on
- 15 of 33 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
18 products the other vendor does not list
- Pinealon$2.87
- ACE-031$116.79
- AICAR$0.64
- B7-33$9.53
- Bronchogen$2.46
- CJC-1295 (with DAC)$11.46
- GDF-8 (Myostatin)$104.73
- GHRP-2$2.35
Only at Redline Bio Labs
10 products the other vendor does not list
- 5-Amino-1MQ$1.58
- Retatrutide$5.46
- Tirzepatide$3.02
- Cagrilintide$7.10
- Cardiogen$3.70
- Cerebrolysin$0.77
- L-Carnitine$0.06
- PEG-MGF$26
Prices shown are per mg for the cheapest in-stock listing we track.
Questions
- Is Peptide Works cheaper than Redline Bio Labs?
- On the 33 products both vendors stock, Peptide Works has the lower effective price per mg on 18 and Redline Bio Labs on 15. 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. Redline Bio 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 Redline Bio Labs?
- Peptide Works: accepts card, zelle, wire, crypto. Redline Bio 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.