PepsTracker › Vendors › LA Peptides vs S1 Labs
Updated July 2026 · 10 shared compounds · discount codes applied
S1 Labs is cheaper on 7 of the 10 shared peptides, LA Peptides on 1, and 2 are priced identically — that is 88% of the 8 compounds where the two actually differ.
Averaged across every shared compound, S1 Labs runs about 2% lower on cost per milligram. Both figures already include each vendor's discount code.
pepstracker (10% off)pepstracker10 (10% 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 | LA Peptides | S1 Labs | Cheaper |
|---|---|---|---|
| NAD+ | $0.135/mg $67.49 / 500mg | $0.117/mg $58.49 / 500mg | S1 Labs 13% cheaper |
| GHK-Cu | $0.720/mg $35.99 / 50mg | $0.360/mg $36.00 / 100mg | S1 Labs 50% cheaper |
| MOTS-c | $6.30/mg $62.99 / 10mg | $3.42/mg $34.20 / 10mg | S1 Labs 46% cheaper |
| SS-31 | $4.50/mg $44.99 / 10mg | $3.42/mg $34.20 / 10mg | S1 Labs 24% cheaper |
| Semax | $3.60/mg $35.99 / 10mg | $3.60/mg $35.99 / 10mg | Tie |
| Tesamorelin | $6.75/mg $67.49 / 10mg | $3.78/mg $37.80 / 10mg | S1 Labs 44% cheaper |
| Retatrutide | $8.55/mg $85.49 / 10mg | $6.30/mg $62.99 / 10mg | S1 Labs 26% cheaper |
| BPC-157 + TB-500 Blend | $6.30/mg $62.99 / 10mg | $6.30/mg $62.99 / 10mg | Tie |
| Cagrilintide | $9.00/mg $89.99 / 10mg | $7.20/mg $72.00 / 10mg | S1 Labs 20% cheaper |
| IGF-1 LR3 | $53.99/mg $53.99 / 1mg | $62.99/mg $62.99 / 1mg | LA Peptides 14% cheaper |
Neither vendor wins across the board, which is the main takeaway. LA Peptides is cheaper on 1 of the 10 shared compounds and S1 Labs on 7. 2 of the 10 shared compounds are priced identically at both vendors, so for those it comes down to shipping speed and stock rather than price. 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: LA Peptides lists around 47 compounds we track versus 18 at S1 Labs. Outside the 10 overlap, only one of them will stock what you need.
LA Peptides — code pepstracker for 10% off. S1 Labs — code pepstracker10 for 10% 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.
S1 Labs is cheaper on 7 of the 10 peptides both vendors stock, LA Peptides on 1, and 2 are priced identically at the two vendors. Across the compounds where they differ, that is 88% in S1 Labs's favour. On average cost-per-milligram, S1 Labs comes out roughly 2% lower. Neither wins everything, so check the specific compound you need.
LA Peptides uses code pepstracker for 10% off, and S1 Labs uses pepstracker10 for 10% 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 10 compounds. LA Peptides lists roughly 47 tracked compounds and S1 Labs lists about 18. 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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