Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Southern Aminos. 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
COAs and pricing viewable without an account — COAs on product pages without login
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
Vial sizes stated with prices — Product pages state vial size with price (e.g. BPC-157 10mg at $44.99; 24 dated size+price readings on record)
Freedom Diagnostics certificate for 5-Amino-1MQ 50mg lot 5A500226B (Search Code Sout2602200108, reported 22 Feb 2026) with a measured net content of 45.08mg; the lab's own lookup returned 'Document found' on 29 Sep 2026.
Legal entity and street address on the contact page: Southern Aminos LLC, 41593 Winchester Road Suite 200, Temecula, CA 92590.
02
The 10 criteria, side by side
10/10 vs 7/10 · one point each, no weighting
Named lab
PurgoSteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
SouthernFreedom Diagnostics on the 5-Amino-1MQ 50mg certificate (lot 5A500226B, reported 22 Feb 2026) — read 29 Sep 2026
Freedom Diagnostics on the 5-Amino-1MQ 50mg certificate (lot 5A500226B, reported 22 Feb 2026) — read 29 Sep 2026
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
SouthernCertificate prints Search Code Sout2602200108; the lab's lookup at freedomdiagnosticstesting.com returned 'Document found' when we ran it on 29 Sep 2026
Certificate prints Search Code Sout2602200108; the lab's lookup at freedomdiagnosticstesting.com returned 'Document found' when we ran it on 29 Sep 2026
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
SouthernCertificate carries lot 5A500226B; the library itself is behind the login, so only directly linked PDFs could be read
Certificate carries lot 5A500226B; the library itself is behind the login, so only directly linked PDFs could be read
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)
SouthernCertificate reports Net Content 45.08mg on a 50mg label (90% of label — flagged under our 95% line)
Certificate reports Net Content 45.08mg on a 50mg label (90% of label — flagged under our 95% line)
Ungated
PurgoCOAs on product pages without login
COAs on product pages without login
SouthernNot awarded
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)
Southern4.7 / 188 on Trustpilot, claimed (read 29 Sep 2026; 22 reviews on 18 Sep)
4.7 / 188 on Trustpilot, claimed (read 29 Sep 2026; 22 reviews on 18 Sep)
Consistent claims
PurgoNo contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
SouthernNot 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)
SouthernNot awarded
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)
SouthernSouthern Aminos LLC · 41593 Winchester Road Suite 200, Temecula, CA 92590 — contact page (29 Sep 2026)
Southern Aminos LLC · 41593 Winchester Road Suite 200, Temecula, CA 92590 — contact page (29 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)
SouthernNo on-site review badge; no regulator action found (checked 29 Sep 2026); checkout not reachable from outside
No on-site review badge; no regulator action found (checked 29 Sep 2026); checkout not reachable from outside
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 Southern Aminos
Read 29 September 2026 on the vendor's own pages
Southern Aminos has a real lab behind it and a real company in front of it, and hides the part in between. The certificate we could reach is lab-confirmed but under-filled by our line; the price list and the rest of the library need an account; the homepage numbers do not survive a look at Trustpilot. 7/10, and the two missing access points are the ones a buyer needs most.
Checks out
✓Freedom Diagnostics certificate for 5-Amino-1MQ 50mg lot 5A500226B (Search Code Sout2602200108, reported 22 Feb 2026) with a measured net content of 45.08mg; the lab's own lookup returned 'Document found' on 29 Sep 2026. source
✓Legal entity and street address on the contact page: Southern Aminos LLC, 41593 Winchester Road Suite 200, Temecula, CA 92590. source
✓Trustpilot 4.7 across 188 reviews on a claimed profile (29 Sep 2026). source
Could not verify · flags
?A single price — product pages return 'Secure Customer Access' and the shop sits behind an age attestation then a login (29 Sep 2026).
?The lab-results library — /lab-results/ redirects to the landing gate; only a directly linked PDF could be opened.
?'250,000+ Satisfied Researchers' and 'vetted cGMP manufacturing partners' — no basis for the number and no certifying body for the cGMP claim.
!'250,000+ Satisfied Researchers' on the homepage against 188 Trustpilot reviews, and 'vetted cGMP manufacturing partners' with no certifying body named (29 Sep 2026).
!The one certificate we could open shows 45.08mg on a 50mg label — 90% of label, under our 95% flag line.
!Trustpilot review count rose from 22 (18 Sep) to 188 (29 Sep 2026).
!Prices, product pages and the COA library are behind a login; a May 2026 ranking-site post describes a 'very disappointing' experience.
Southern Aminos LLC · 41593 Winchester Road Suite 200, Temecula, CA 92590 · cs@southernaminos.com — contact page (29 Sep 2026). No phone.
Lab lookup run 29 Sep 2026: 'Document found'. 90% of label. The COA library itself is behind the vendor's login; this PDF is directly reachable.
06
Score history and the caveats
A score only moves when the evidence does
2026-09-297/10 — first assessment (rubric v2); not awarded: ungated, claims-consistent, sized-pricing — prices and COA library behind a login; lab search code confirmed at the lab; certificate shows 45.08mg on a 50mg label
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.
Southern Aminos: the caveat
Pricing, the lab-results library and every product page sit behind an age attestation and then a login ('Secure Customer Access'), so a buyer cannot see a price or browse certificates before registering. The one certificate we could open shows 45.08mg on a 50mg label — 90% of label, under our 95% flag line. The homepage claims '250,000+ Satisfied Researchers' and 'vetted cGMP manufacturing partners' with nothing to check either against; the Trustpilot count went from 22 to 188 in eleven days.
07
Where the evidence points
Where the evidence points
Purgo Labs 10/10
We earn nothing from Southern Aminos. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — with a live, independent review record.
Purgo Labs, on the evidence: 10/10 rubric points against 7/10. Southern Aminos 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 Southern Aminos legit?
Southern Aminos scores 7/10 on our rubric, has an independently viewable rating of 4.7 (188 reviews), and names its lab (Freedom Diagnostics). Caveat: Pricing, the lab-results library and every product page sit behind an age attestation and then a login ('Secure Customer Access'), so a buyer cannot see a price or browse certificates before registering. The one certificate we could open shows 45.08mg on a 50mg label — 90% of label, under our 95% flag line. The homepage claims '250,000+ Satisfied Researchers' and 'vetted cGMP manufacturing partners' with nothing to check either against; the Trustpilot count went from 22 to 188 in eleven days.
Which is cheaper, Purgo Labs or Southern Aminos?
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; we earn nothing from Southern Aminos. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.