Disclosure: Purgo Labs is our affiliate partner, and so is Arizen BioLabs. 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.
01
Where each vendor is stronger
Computed from the rubric, prices and review record — never curated
Purgo Labs
Certificates verifiable at the lab, not just the vendor — Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Independent review base (50+ on an external platform) — 4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
Publishes a legal entity and street address — PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
Lower list price on 5 of 8 like-for-like rows we have on record (see table).
The published BPC-157 10mg certificate is a Janoshik test report (task #103199, batch J0-2601-004, analysed 29 Jan 2026) stating 11.75mg and 11.44mg measured for two vials against a 10mg label, purity 99.53% / 99.48%.
Eleven certificate images viewable without an account after a researcher-gate click.
02
The 10 criteria, side by side
10/10 vs 6/10 · one point each, no weighting
Named lab
PurgoSteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
ArizenJanoshik printed on the published certificate (task #103199); page text does not name the lab
Janoshik printed on the published certificate (task #103199); page text does not name the lab
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
ArizenNot awarded
Per-lot COAs
PurgoLot numbers (e.g. PL-BPC-05) with test dates per batch
Lot numbers (e.g. PL-BPC-05) with test dates per batch
Only vials both vendors list at the same size, read on each vendor's product page on the date shown. "After code" is list × the code's stated discount — a calculation, labelled as one; stacking with sale pricing is not cart-tested.
04
What we found at Arizen BioLabs
Read 5 September 2026 on the vendor's own pages
The certificate is the best thing here: a real Janoshik report with a batch number and measured mass for two vials. The rest is thinner than the 4.8 rating suggests — the lab is never named in page text, the company name lives only in hidden markup, and the three GLP products are sold as codes. Good documentation for the eleven products that have it; check whether yours is one of them.
Checks out
✓The published BPC-157 10mg certificate is a Janoshik test report (task #103199, batch J0-2601-004, analysed 29 Jan 2026) stating 11.75mg and 11.44mg measured for two vials against a 10mg label, purity 99.53% / 99.48%. source
✓Eleven certificate images viewable without an account after a researcher-gate click. source
✓4.8 across 42 Trustpilot reviews on a claimed profile (read 5 Sep 2026). source
?The Janoshik task number at the lab — janoshik.com's lookup blocked our requests, so the certificate is confirmed only as a vendor-hosted image.
?Who runs it — 'Arizen Bio Labs LLC' appears only in hidden page markup (Organization schema), not in the visible Terms, About or Contact text; no address or phone anywhere.
?What ABL-1 SM / ABL-2 TRZ / ABL-3 RT contain — the vendor never states it; a third-party aggregator uses different codes for the same items.
?TB-500 — no certificate is listed for it on the COA page.
!The COA page says testing is done by 'independent, accredited laboratories' (plural, unnamed); every published certificate is from one lab, Janoshik.
!The BPC-157 page says '≥99% purity verified via HPLC and Mass Spectrometry'; the Janoshik report shows a purity line only, with no MS identity result.
!GLP-class products sold under house codes with no stated identity.
!Countdown-timer sale banner and a points/rewards scheme on every page — urgency mechanics.
!Site blocks non-browser requests; everything here was read in a normal browser session.
Arizen Bio Labs LLC (schema markup only) · no address or phone · support@arizenbiolabs.com
Vials measured 11.75 / 11.44 mg — over-fill beyond 115% is flagged, not rewarded.
Over label (>115%)No lab-side verification
No lab-side lookup for this reportTranscribed by Compound Review; the laboratory's report is the record.
Where Arizen BioLabs ranks by compound
Arizen BioLabs appears in 10 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
2026-09-066/10 — re-issued under rubric v2 (was 5/8); not awarded: lab-hosted, review-base, claims-consistent, identity
Purgo Labs: the caveat
Smaller independent review base than several competitors (80 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
Arizen BioLabs: the caveat
42 reviews. The lab is named only on the certificate images — page text says 'independent, accredited laboratories' without naming one. Certificates are vendor-hosted; we could not confirm the task number at Janoshik. The legal entity (Arizen Bio Labs LLC) appears only in hidden page markup, with no address or phone. GLP products sold as ABL-1 SM / ABL-2 TRZ / ABL-3 RT with no stated identity. TB-500 has no published certificate.
07
Where to order
Our pick
Purgo Labs 10/10
Certificates checkable at the lab, measured net content per lot, the deepest GLP-1 catalog we track.
Purgo Labs, on the evidence: 10/10 rubric points against 6/10. Arizen BioLabs is stronger on 3 points listed below. Every point is a fact you can check on either vendor's site; both are scored by the same published rubric.
Is Arizen BioLabs legit?
Arizen BioLabs scores 6/10 on our rubric, has an independently viewable rating of 4.8 (44 reviews), and names its lab (Janoshik (on certificates)). Caveat: 42 reviews. The lab is named only on the certificate images — page text says 'independent, accredited laboratories' without naming one. Certificates are vendor-hosted; we could not confirm the task number at Janoshik. The legal entity (Arizen Bio Labs LLC) appears only in hidden page markup, with no address or phone. GLP products sold as ABL-1 SM / ABL-2 TRZ / ABL-3 RT with no stated identity. TB-500 has no published certificate.
Which is cheaper, Purgo Labs or Arizen BioLabs?
On the 8 compound-and-size rows where we have dated prices from both, Arizen BioLabs lists lower on 5 and Purgo Labs on 2 (1 equal). Purgo's list prices drop 20% with code HEALTH; Arizen BioLabs's drop with code HEALTH (10% off).
Do you earn money from either vendor?
Purgo Labs is our affiliate partner and we earn a commission on referred orders, as we do from Arizen BioLabs. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.