Vendors

GenPeptide vs Redline Bio Labs

Across the 4 products both vendors stock, GenPeptide has the lower effective price per mg on 3 and Redline Bio Labs on 1. GenPeptide lists 32 tracked listings across 4 products; Redline Bio Labs lists 83 across 43. On certificates of analysis both show none found COA coverage of the in-stock products we track. 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.

GenPeptide

GenPeptide is a research-peptide vendor that lists 13 injectable peptides, including Tirzepatide, GHK-Cu and Retatrutide.

Price vs market median
31% below market
Tracked catalog
4 products · $
Cheaper on
3 of 4 shared
COA coverage
None found
Visit GenPeptide
Redline Bio Labs

Redline Bio Labs is a research-peptide vendor that lists 80 injectable peptides, including FOXO4-DRI, Epitalon and NAD+.

Price vs market median
1% below market
Tracked catalog
43 products · $$
Cheaper on
1 of 4 shared
COA coverage
None found
Visit Redline Bio Labs

Vendor facts

Detail
GenPeptide
Redline Bio Labs
Sells
13 vials
80 vials
Tracked listings
32 across 4 products
83 across 43 products

Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice.

Certificates on file

Detail
GenPeptide
Redline Bio Labs
COA coverage
None found
None found
Certificates
0 current
0 current
Labs
—
—
Newest test date
—
—

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.

Price per mg on shared products

4 products both stock
Product
GenPeptide
Redline Bio Labs
GHK-Cu
$0.40
$0.60
Retatrutide
$3.75
$5.43
Tirzepatide
$2.17
$2.71
Semaglutide
$4.50
$3.93

The lower price of each pair is highlighted. Prices are the cheapest in-stock listing we track for that product, per mg after any public discount code, and they move daily.

Carried by one vendor only

Only at Redline Bio Labs

39 products the other vendor does not list

31 more on the Redline Bio Labs page

Prices shown are per mg for the cheapest in-stock listing we track.

Questions

Is GenPeptide cheaper than Redline Bio Labs?
On the 4 products both vendors stock, GenPeptide has the lower effective price per mg on 3 and Redline Bio Labs on 1. 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?
GenPeptide: none found. 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.
What does each vendor carry?
GenPeptide has 4 priced products in the current index and Redline Bio Labs has 43, 4 of which appear on both catalogs. 0 products are listed only by GenPeptide and 39 only by Redline Bio Labs.

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Market tape