Buying Guide — 2026-10-16
Reta 20mg is the best per-mg value of the two Reta sizes, and the reason is cost per mg rather than the sticker price. This guide covers what the 20mg vial costs, its cost per mg, how it compares to the 10mg vial, and how the discount code changes the math. For laboratory research use only.
The Reta 20mg vial ships with a batch-matched COA at 99%+ HPLC purity. Code PLATINUM25 takes 25% off at checkout.
The Reta 20mg vial is $179, or $134.25 with code PLATINUM25 (25% off). Because it holds twice the material of a 10mg vial, its cost per mg is the lower of the two:
| Vial | Price | With PLATINUM25 | Cost per mg (after code) |
| Reta 10mg | $105 | $78.75 | ~$7.88 |
| Reta 20mg | $179 | $134.25 | ~$6.71 |
The 20mg vial costs less per mg and less than buying two 10mg vials, so it's the value pick for extended research — see Reta 20mg vs two 10mg vials. The 10mg vial is the lower up-front cost; compare in how much Reta 10mg costs. For the general overview, see how much Reta costs.
The price reflects a batch-matched COA at 99%+ HPLC purity, a lyophilized vial, and US shipping. For what separates a verified listing from a cheap one, see Reta 20mg for sale.
Reta 20mg is $179, or $134.25 with PLATINUM25 — about $6.71 per mg after the code, the best per-mg value of the two sizes and cheaper than two 10mg vials.
Code PLATINUM25 takes 25% off at checkout. Every Reta 20mg vial ships with a batch-matched COA.
Disclaimer: All information presented in this article is for educational and informational purposes only. Platinum Biolabs does not promote or endorse the use of peptides for human consumption. All products sold by Platinum Biolabs are intended strictly for laboratory and research use only. Consult a qualified healthcare professional before making any health-related decisions.