Verdict: Purgo Labs, on the evidence: 10/10 rubric points against 3/10. Sports Technology Labs is stronger on 2 points listed below.
Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Sports Technology Labs. Scores come from the public rubric, which has no partnership input.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
No compound-and-size pair with dated prices from both vendors yet. Each vendor's readings are on the price index.
An established SARMs-and-peptides shop with named labs and open pricing, a removed Trustpilot profile, no company name, and a BBB 'F' for claims it has not substantiated. We are its affiliate. Three of ten is what the evidence supports.
certificate images and sized pricing viewable without an account.
494 Bridgeport Ave Suite 101-222, Shelton, CT; operating since 2019.
BPC-157 5mg $56.99, TB-500 5mg $66.99, NAD+ 500mg $124.99; semaglutide sold as 'GLP-1 SG' 5mg $174.99 with CAS.
the Contact page's FAQ link resolves to a staging domain (stl1.wp-nis2.de).
Every finding above is published unchanged.
(read 14 Aug 2026).
certificates are vendor-hosted images; product pages state purity only.
trade name only.
Smaller independent review base than several competitors (101 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
SARMs-first vendor — the peptide catalog is narrower, particularly in the GLP-1 class. Stated peptide purity is 96–99%, below the ≥99% some competitors claim.
We earn nothing from Sports Technology Labs. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — with a live, independent review record.
Affiliate links, disclosed. Purgo Labs is our primary partner; we earn nothing from Sports Technology Labs. Partnership is not a rubric input.
Purgo Labs, on the evidence: 10/10 rubric points against 3/10. Sports Technology Labs is stronger on 2 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Sports Technology Labs scores 3/10 on our rubric, has no independent record (its Trustpilot profile has been removed), and names its lab (MZ Biolabs · Colmaric Analyticals). Caveat: SARMs-first vendor — the peptide catalog is narrower, particularly in the GLP-1 class. Stated peptide purity is 96–99%, below the ≥99% some competitors claim.
We do not yet have a like-for-like price pair for these two vendors; the Peptide Price Index has each vendor's dated readings.
Purgo Labs is our affiliate partner and we earn a commission on referred orders; we earn nothing from Sports Technology Labs. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.
Sports Technology Labs uses a named third-party lab, MZ Biolabs, and posts the COA on each product page with recent batch numbers, HPLC purity, and mass-spectrometry identity results. SARMs are listed at a minimum 98% purity and peptides at 96–99%. The company also runs endotoxin and heavy-metal testing on select products. This is a genuine strength and one of the clearest advantages STL has over many competitors.