Vendors

Modern Research Peptides vs Redline Bio Labs

Across the 35 products both vendors stock, Modern Research Peptides has the lower effective price per mg on 30 and Redline Bio Labs on 5. Modern Research Peptides lists 83 tracked listings across 44 products; Redline Bio Labs lists 80 across 44. On certificates of analysis the in-stock products we track rate broad at Modern Research Peptides 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.

Modern Research Peptides

Modern Research Peptides is a US research-peptide vendor that lists 79 injectable peptides, including Retatrutide, BPC-157 and NAD+.

Price vs market median
33% below market
Tracked catalog
44 products · $
Cheaper on
30 of 35 shared
COA coverage
Broad
Visit Modern Research Peptides
Redline Bio Labs

Redline Bio Labs is a research-peptide vendor that lists 79 injectable peptides, including FOXO4-DRI, Epitalon and SS-31.

Price vs market median
1% below market
Tracked catalog
44 products · $$
Cheaper on
5 of 35 shared
COA coverage
None found
Visit Redline Bio Labs

Vendor facts

Detail
Modern Research Peptides
Redline Bio Labs
Sells
79 vials
79 vials
Location
US
—
Shipping
$9.99
—
Free over
$250
—
Storefront
WooCommerce
—
Tracked by us since
Jul 2026
—
Tracked listings
83 across 44 products
80 across 44 products

Dashes mark facts we have not recorded yet. Vendor-stated details come from each storefront and can change without notice. Facts for Modern Research Peptides were extracted from the vendor's site and not yet reviewed by us.

Certificates on file

Detail
Modern Research Peptides
Redline Bio Labs
COA coverage
Broad
None found
Certificates
43 current
0 current
Labs
2 named, most from Freedom Diagnostics
—
Newest test date
Jul 13, 2026
—
Third-party tested claim
—
—

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

35 products both stock
Product
Modern Research Peptides
Redline Bio Labs
5-Amino-1MQ
$0.98
$1.58
BPC-157
$2.37
$4.63
DSIP
$3.15
$4.93
Epitalon
$3.30
$1.64
GHK-Cu
$0.40
$0.60
Ipamorelin
$3.07
$6
KPV
$3.07
$5.50
Melanotan II
$2.80
$3.90
MOTS-c
$1.73
$3.20
NAD+
$0.07
$0.09
PT-141
$3.30
$5.20
Retatrutide
$2.20
$5.46
Selank
$3.13
$2.80
Semax
$3.50
$2.80
SS-31
$2.09
$2.72
TB-500
$4.70
$7
Tesamorelin
$4.90
$6.30
Tirzepatide
$1.76
$3.02
ARA-290
$3.80
$4.90
Cagrilintide
$6.67
$7.10
Cardiogen
$2.29
$3.70
Cartalax
$2.30
$3.70

Showing 24 of 35 shared products; both full catalogs sit on the vendor pages. 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 Modern Research Peptides

9 products the other vendor does not list

1 more on the Modern Research Peptides page

Only at Redline Bio Labs

9 products the other vendor does not list

1 more on the Redline Bio Labs page

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

Questions

Is Modern Research Peptides cheaper than Redline Bio Labs?
On the 35 products both vendors stock, Modern Research Peptides has the lower effective price per mg on 30 and Redline Bio Labs on 5. 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?
Modern Research Peptides: broad, newest test dated 2026-07-13. 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 Modern Research Peptides and Redline Bio Labs?
Modern Research Peptides: shipping $9.99. 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.

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