PepsTracker › Vendors › Reta One Labs vs Puratek Peptides
Updated July 2026 · 11 shared compounds · discount codes applied
Puratek Peptides is cheaper on 8 of the 11 shared peptides, Reta One Labs on 3 — that is 73% of the 11 compounds where the two actually differ.
Averaged across every shared compound, Puratek Peptides runs about 10% lower on cost per milligram. Both figures already include each vendor's discount code.
pepstracker (5% off)pepstracker (0% off)Every price below is the discounted price divided by milligrams, so vial sizes do not distort the comparison. Sorted by cheapest available option.
| Peptide | Reta One Labs | Puratek Peptides | Cheaper |
|---|---|---|---|
| GHK-Cu | $0.465/mg $46.55 / 100mg | $0.289/mg $28.95 / 100mg | Puratek Peptides 38% cheaper |
| Tirzepatide | $2.28/mg $22.80 / 10mg | $0.666/mg $39.95 / 60mg | Puratek Peptides 71% cheaper |
| MOTS-c | $1.71/mg $68.40 / 40mg | $0.749/mg $29.95 / 40mg | Puratek Peptides 56% cheaper |
| Glow Blend | $0.909/mg $63.65 / 70mg | $0.856/mg $59.95 / 70mg | Puratek Peptides 6% cheaper |
| Semaglutide | $1.85/mg $37.05 / 20mg | $2.50/mg $24.95 / 10mg | Reta One Labs 26% cheaper |
| PT-141 (Bremelanotide) | $2.47/mg $24.70 / 10mg | $3.15/mg $31.45 / 10mg | Reta One Labs 21% cheaper |
| BPC-157 + TB-500 Blend | $2.85/mg $57.00 / 20mg | $2.60/mg $51.95 / 20mg | Puratek Peptides 9% cheaper |
| CJC/Ipa Blend | $3.51/mg $35.15 / 10mg | $2.60/mg $51.95 / 20mg | Puratek Peptides 26% cheaper |
| Tesamorelin | $3.70/mg $37.05 / 10mg | $2.75/mg $54.95 / 20mg | Puratek Peptides 26% cheaper |
| Retatrutide | $2.75/mg $27.55 / 10mg | $4.50/mg $44.95 / 10mg | Reta One Labs 39% cheaper |
| BPC-157 | $3.70/mg $37.05 / 10mg | $3.00/mg $29.95 / 10mg | Puratek Peptides 19% cheaper |
Neither vendor wins across the board, which is the main takeaway. Reta One Labs is cheaper on 3 of the 11 shared compounds and Puratek Peptides on 8. If you buy a single compound, the table above is the answer. If you are placing one larger order to save on shipping, the vendor that wins your two or three highest-volume compounds usually nets out ahead.
Catalog breadth matters too: Reta One Labs lists around 14 compounds we track versus 30 at Puratek Peptides. Outside the 11 overlap, only one of them will stock what you need.
Reta One Labs — code pepstracker for 5% off. Puratek Peptides — code pepstracker for 0% off. Codes are applied before ranking on this page, which is why the order can differ from list prices. Always confirm the code at checkout.
Puratek Peptides is cheaper on 8 of the 11 peptides both vendors stock, Reta One Labs on 3. Across the compounds where they differ, that is 73% in Puratek Peptides's favour. On average cost-per-milligram, Puratek Peptides comes out roughly 10% lower. Neither wins everything, so check the specific compound you need.
Reta One Labs uses code pepstracker for 5% off, and Puratek Peptides uses pepstracker for 0% off. Every price in the comparison table already has these codes applied, which is why the ranking can differ from list prices.
They overlap on 11 compounds. Reta One Labs lists roughly 14 tracked compounds and Puratek Peptides lists about 30. If you need something outside the overlap, only one of them will have it.
Vial sizes differ between vendors, so sticker price is misleading. A larger vial at a higher price is often cheaper per milligram. Every figure here is the discounted price divided by milligrams, which is the only like-for-like comparison.
Open the live tracker to compare these two against all 25 vendors in real time, or browse every vendor we track.
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