Disclosure: Purgo Labs is our affiliate partner, and so is SKO Compounds. 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
Names its testing laboratory — SteriGenix and Freedom Diagnostics named per lot
Certificates verifiable at the lab, not just the vendor — Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Batch-specific COAs matched to lots — Lot numbers (e.g. PL-BPC-05) with test dates per batch
Publishes measured net content vs label — Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
No misleading trust signals or buyer-protection workarounds — No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
4.8 across 535 Trustpilot reviews on a claimed profile; most recent review 15 Sep 2026 (read 24 Sep 2026).
Legal entity now on the site: 'SKO Compounds LLC' in the refund policy; mailbox address 8605 Santa Monica Blvd #383491, West Hollywood, CA 90069 on the Contact page (24 Sep 2026).
02
The 10 criteria, side by side
10/10 vs 4/10 · one point each, no weighting
Named lab
PurgoSteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
SKONot awarded
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
SKONot 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
SKONot awarded
Net content
PurgoMeasured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
SKONot awarded
Ungated
PurgoCOAs on product pages without login
COAs on product pages without login
SKOCatalog and sized pricing viewable without an account (age-gate only)
Catalog and sized pricing viewable without an account (age-gate only)
Review base
Purgo4.7 / 99 on Trustpilot (re-read 2 Oct 2026; was 4.7 / 95 on Trustpilot)
4.7 / 99 on Trustpilot (re-read 2 Oct 2026; was 4.7 / 95 on Trustpilot)
SKO4.8 / 565 on Trustpilot (re-read 2 Oct 2026; was 4.8 / 535 on Trustpilot)
4.8 / 565 on Trustpilot (re-read 2 Oct 2026; was 4.8 / 535 on Trustpilot)
Consistent claims
PurgoNo contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
SKONot awarded
Sized pricing
PurgoProduct pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
SKOEvery product lists sizes with list and sale prices (e.g. Ipamorelin 10mg, NAD+ 500mg)
Every product lists sizes with list and sale prices (e.g. Ipamorelin 10mg, NAD+ 500mg)
Entity + address
PurgoPurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
PurgoLabs LLC (Arizona) · 10105 E Via Linda St Bld 103, Scottsdale, AZ — on-site (6 Sep 2026)
SKOSKO Compounds LLC (refund policy) · 8605 Santa Monica Blvd #383491, West Hollywood, CA 90069 on /contact — a mailbox suite number, disclosed as such (read 24 Sep 2026)
SKO Compounds LLC (refund policy) · 8605 Santa Monica Blvd #383491, West Hollywood, CA 90069 on /contact — a mailbox suite number, disclosed as such (read 24 Sep 2026)
Clean record
PurgoNo on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
No on-site review badge contradicting the independent record; card payment accepted; no regulator action found (checked 6 Sep 2026)
No compound-and-size pair with dated prices from both vendors yet. Each vendor's readings are on the price index.
04
What we found at SKO Compounds
Read 24 September 2026 on the vendor's own pages
A large, active review base and, as of this read, a company name — but not one certificate we could open, and no lab named. The score is low because the documentation is, not because of the reviews. Affiliate partner; disclosed, not scored.
Checks out
✓4.8 across 535 Trustpilot reviews on a claimed profile; most recent review 15 Sep 2026 (read 24 Sep 2026). source
✓Legal entity now on the site: 'SKO Compounds LLC' in the refund policy; mailbox address 8605 Santa Monica Blvd #383491, West Hollywood, CA 90069 on the Contact page (24 Sep 2026). source
✓Catalog and sized pricing viewable without an account (age gate only). source
Could not verify · flags
?No testing laboratory is named anywhere: /coas redirects to the welcome gate, and the '>99% purity with publicly available COAs' claim could not be matched to a single certificate page (24 Sep 2026).
?The published address is a mailbox suite, not an operating location.
?FDA and BBB searches were blocked by an anti-bot challenge on 24 Sep 2026 — recorded as not checked, not as clean.
!Pre-order products display review counts before they have shipped; the homepage has cited a Trustpilot count below the live figure (6 Sep 2026).
!'Strict no refund and no return policy' (24 Sep 2026).
SKO Compounds LLC (refund policy) · 8605 Santa Monica Blvd #383491, West Hollywood, CA 90069 (mailbox) — Contact page (24 Sep 2026)
2026-09-063/10 — re-issued under rubric v2 (was 3/8); not awarded: named-lab, lab-hosted, per-lot, net-content, claims-consistent, identity, clean-record
2026-09-244/10 — 3/10 → 4/10 — identity awarded: 'SKO Compounds LLC' now named in the refund policy alongside the West Hollywood mailbox address (disclosed as a mailbox)
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.
SKO Compounds: the caveat
The testing laboratory is not named anywhere we could find, so testing claims cannot be looked up. Pre-order 'Research Sprays' displayed star ratings and review counts before their stated ship date — reviews cannot precede shipment, and on-site review counts are self-hosted and unverifiable. Roughly 15 of ~34 vial products were sold out on the day checked.
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 4/10. SKO Compounds is stronger on 4 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 SKO Compounds legit?
SKO Compounds scores 4/10 on our rubric, has an independently viewable rating of 4.8 (565 reviews), and does not name its testing laboratory. Caveat: The testing laboratory is not named anywhere we could find, so testing claims cannot be looked up. Pre-order 'Research Sprays' displayed star ratings and review counts before their stated ship date — reviews cannot precede shipment, and on-site review counts are self-hosted and unverifiable. Roughly 15 of ~34 vial products were sold out on the day checked.
Which is cheaper, Purgo Labs or SKO Compounds?
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.
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 SKO Compounds. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.
What is the pre-order review issue at SKO?
On the day we checked, SKO listed five pre-order spray products with a stated ship date of 22 August 2026 - each already displaying a star rating and review count, such as 4.9 from 186 reviews. Reviews cannot precede shipment. We offer no theory about the numbers' origin; the observation was checkable on their homepage, and its practical meaning is that SKO's self-hosted ratings should not inform a buying decision. Its independently hosted Trustpilot record is a separate matter and remains genuine.