PepsTracker › Vendors › Reta One Labs vs Puratek Peptides
Updated August 2026 · 12 shared compounds · discount codes applied
These two are dead even — each is cheaper on exactly 6 of the 12 shared peptides.
Averaged across every shared compound, Reta One Labs runs about 21% 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 |
|---|---|---|---|
| NAD+ | $0.112/mg $56.05 / 500mg | $0.086/mg $42.95 / 500mg | Puratek Peptides 23% cheaper |
| GHK-Cu | $0.465/mg $46.55 / 100mg | $0.350/mg $34.95 / 100mg | Puratek Peptides 25% cheaper |
| Glow Blend | $0.909/mg $63.65 / 70mg | $0.856/mg $59.95 / 70mg | Puratek Peptides 6% cheaper |
| Tirzepatide | $2.28/mg $22.80 / 10mg | $1.50/mg $89.95 / 60mg | Puratek Peptides 34% cheaper |
| MOTS-c | $1.71/mg $68.40 / 40mg | $1.75/mg $69.95 / 40mg | Reta One Labs 2% cheaper |
| Semaglutide | $1.85/mg $37.05 / 20mg | $3.50/mg $34.95 / 10mg | Reta One Labs 47% 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 |
| 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 |
| CJC/Ipa Blend | $3.51/mg $35.15 / 10mg | $7.00/mg $69.95 / 10mg | Reta One Labs 50% cheaper |
| Tesamorelin | $3.70/mg $37.05 / 10mg | $5.25/mg $104.95 / 20mg | Reta One Labs 29% cheaper |
Neither vendor wins across the board, which is the main takeaway. Reta One Labs is cheaper on 6 of the 12 shared compounds and Puratek Peptides on 6. 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 12 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.
They are remarkably even — each wins on the same number of shared compounds. The right pick depends entirely on which specific peptide you are buying.
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 12 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 27 vendors in real time, or browse every vendor we track.
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