Third-party COA published for every batchPrice per mg shown on every productShips next business day

retacost

Price per mg, out in the open

Research peptides.
Honest prices.

Every price is the live catalog price, with the cost per mg shown on every product. 28 compounds, a third-party certificate for every batch.

Shop all Price Index

Lowest $/mg

The six lowest prices per mg in the catalog right now, each at its best-value size.

Full price index →
  1. 01 Glutathione 1500 mg · $69.99 $0.05/mg
  2. 02 NAD+ 500 mg · $85.00 $0.17/mg
  3. 03 GHK-Cu 100 mg · $75.00 $0.75/mg
  4. 04 GLOW 70 mg · $125.00 $1.79/mg
  5. 05 KLOW 80 mg · $145.00 $1.81/mg
  6. 06 Melanotan II (MT-2) 10 mg · $50.00 $5.00/mg

Shop by category

Search the shop →

GLP-3 RT

from $100.00

$10.00/mg

H2O

from $7.00

Save up to 40%

Wolv. Blend

10 mg $89.99

$9.00/mg
Save up to 40%

Tesamorelin

10 mg $115.00

$11.50/mg
Save up to 40%

KLOW

80 mg $145.00

$1.81/mg
Save up to 40%

BPC-157

from $50.00

$10.00/mg
Save up to 40%

GHK-Cu

from $50.00

$1.00/mg
Save up to 40%

MOTS-c

10 mg $65.00

$6.50/mg
Save up to 40%

NAD+

500 mg $85.00

$0.17/mg
Save up to 40%

GLOW

70 mg $125.00

$1.79/mg
Save up to 40%

GLP-2 TZ

10 mg $85.00

$8.50/mg
Save up to 40%

SS-31

10 mg $65.99

$6.60/mg
Save up to 40%

Semax

10 mg $55.00

$5.50/mg
Save up to 40%

KPV

10 mg $50.00

$5.00/mg
Save up to 40%

PT-141

10 mg $55.00

$5.50/mg
Save up to 40%

GLP-1 SM

10 mg $75.00

$7.50/mg
Save up to 40%

AOD-9604

5 mg $69.99

$14.00/mg
Save up to 40%

Ipamorelin

10 mg $55.00

$5.50/mg
Save up to 40%

IGF-1 LR3

1 mg $79.00

$79.00/mg
Save up to 40%

5-AMINO-1MQ

10 mg $65.00

$6.50/mg
Save up to 40%

ARA-290

10 mg $82.00

$8.20/mg
Save up to 40%

DSIP

5 mg $45.00

$9.00/mg
Save up to 40%

Selank

10 mg $55.00

$5.50/mg

How we price

  1. 1 Live catalog prices Every price on this site is read from the live catalog and refreshed at least once an hour. Shipping is shown at checkout before you pay.
  2. 2 Cost per mg, shown $/mg is the vial price divided by the mg in the vial, so different sizes and compounds compare directly. Blends and liquids have no single mg figure and show none.
  3. 3 Bundles: pay for fewer vials On compounds that offer bundles, Buy 2 gets a 3rd vial free and Buy 3 gets 2 more free. Wolv. Blend 10 mg: 5 vials for $269.97 instead of $449.95, $53.99 a vial.

Batch documentation

A certificate for every batch

Each batch is tested by an independent laboratory before it is sold. Its certificate of analysis lists the lot number, the compound's identity, the measured quantity in the vial and purity by HPLC. Certificates are in the gallery on each product page.

  • COA every batchPublished before the batch is sold.
  • HPLC testedPurity reported on each certificate.
  • Lot numbersPrinted on every vial and its certificate.
  • Research use onlySold for laboratory research use only.

Frequently asked

All questions →
What does "research use only" mean?

Every product on this site is sold for laboratory research use only. Products must be handled, stored and used in line with all applicable laws and regulations, and only for lawful research.

Where do I find a certificate of analysis (COA)?

A certificate of analysis is published for each batch, with the lot number and the purity measured by HPLC. Certificates of analysis are shown in the gallery on each product page.

When does my order ship?

Orders placed before 2 PM ET, Monday to Friday, ship the same day. Orders placed later ship the next business day. Delivery is typically 2–4 business days after dispatch. See the Shipping Policy.

How current are prices and stock?

Prices, sizes and stock are read from the live catalog and refreshed at least once an hour.