Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Modified Aminos. Scores come from the public rubric, which has no partnership input.
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
Lower list price on 1 of 1 like-for-like rows we have on record (see table).
A 130-lot public COA library: each lot page transcribes the report (lab, test date, every analyte) and links the original PDF. The TB-500 10mg record for lot MA-TB5I-100 (Ethos Analytics Laboratory, Phoenix, AZ; tested 6 Jul 2026) reports 10.12mg/vial against a 10mg specification, identity confirmed by retention-time concordance, endotoxin <1.25 EU/ml, heavy metals and microbial panels passed.
Legal entity, address and phone on the contact and terms pages: Modified Aminos LLC, 1309 Coffeen Ave, Sheridan, WY 82801, (805) 804-3534; card statements show 'MODIFIED AMINOS LLC'; ships from Texas.
02
The 10 criteria, side by side
10/10 vs 9/10 · one point each, no weighting
Named lab
PurgoSteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
ModifiedEthos Analytics Laboratory (Phoenix, AZ) on the TB-500 10mg record, lot MA-TB5I-100, tested 6 Jul 2026 — read 29 Sep 2026
Ethos Analytics Laboratory (Phoenix, AZ) on the TB-500 10mg record, lot MA-TB5I-100, tested 6 Jul 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
ModifiedNot 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
Modified130-lot public COA library; each lot page transcribes its report and links the original PDF
130-lot public COA library; each lot page transcribes its report and links the original PDF
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)
ModifiedRecord reports 10.12mg/vial against a 10mg specification; identity confirmed; purity printed as >99%
Record reports 10.12mg/vial against a 10mg specification; identity confirmed; purity printed as >99%
Ungated
PurgoCOAs on product pages without login
COAs on product pages without login
ModifiedCOA library, catalog and prices viewable without an account (29 Sep 2026)
COA library, catalog and prices viewable without an account (29 Sep 2026)
Review base
Purgo4.7 / 88 on Trustpilot (re-read 18 Sept 2026; was 4.7 / 80 on Trustpilot)
4.7 / 88 on Trustpilot (re-read 18 Sept 2026; was 4.7 / 80 on Trustpilot)
Modified4.8 / 258 on Trustpilot, claimed (read 29 Sep 2026)
4.8 / 258 on Trustpilot, claimed (read 29 Sep 2026)
Consistent claims
PurgoNo contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
ModifiedTesting claims ('lot-specific COAs', 'independently assayed') match the library; no accreditation or certification claimed without a body (29 Sep 2026)
Testing claims ('lot-specific COAs', 'independently assayed') match the library; no accreditation or certification claimed without a body (29 Sep 2026)
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)
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 Modified Aminos
Read 29 September 2026 on the vendor's own pages
Modified Aminos does almost everything the rubric asks — a named lab, a lot record for every product with measured content, open prices, a real LLC with a phone number and a 258-review Trustpilot profile. The one point it misses is the one that matters most to a sceptic: nothing lets you confirm a certificate with the lab rather than the vendor. 9/10, with that caveat attached.
Checks out
✓A 130-lot public COA library: each lot page transcribes the report (lab, test date, every analyte) and links the original PDF. The TB-500 10mg record for lot MA-TB5I-100 (Ethos Analytics Laboratory, Phoenix, AZ; tested 6 Jul 2026) reports 10.12mg/vial against a 10mg specification, identity confirmed by retention-time concordance, endotoxin <1.25 EU/ml, heavy metals and microbial panels passed. source
✓Legal entity, address and phone on the contact and terms pages: Modified Aminos LLC, 1309 Coffeen Ave, Sheridan, WY 82801, (805) 804-3534; card statements show 'MODIFIED AMINOS LLC'; ships from Texas. source
✓Trustpilot 4.8 across 258 reviews on a claimed profile (29 Sep 2026). source
✓Sized prices viewable logged out: BPC-157 5mg $24.99, TB-500 10mg $39.99, plus sprays, capsules and blends; single vial, two-pack and trio options. source
Could not verify · flags
?The certificate at the lab — Ethos Analytics has no public lookup portal, so the report can only be downloaded from the vendor; the library page itself advises contacting the lab directly.
?A measured purity figure — the record prints 'Chromatographic Purity >99%' against a '>99%' specification rather than a number.
?A standalone 10mg BPC-157 vial — the catalog lists BPC-157 at 5mg, in sprays, capsules and a 10/10mg TB-500 blend.
!Ethos Analytics reports are vendor-hosted with no lab-side lookup; the PDF's document title reads 'ETHOS AUTO COAS MAY2026'.
!'Save 10% with Link Money bank payment' — a discount for a rail with less recourse than a card; cards are still accepted.
!Trustpilot review count rose from 187 (18 Sep) to 258 (29 Sep) on a paid Trustpilot subscription.
Modified Aminos LLC · 1309 Coffeen Ave, Sheridan, WY 82801 · (805) 804-3534 · cs@modifiedaminos.shop — contact and terms pages (29 Sep 2026). The Sheridan address is a registered-agent address; the footer says orders ship from Texas.
No lab-side lookup for this reportWhere we opened it Transcribed by Compound Review; the laboratory's report is the record.
Purity printed as '>99%' rather than a figure. No lab-side lookup exists for Ethos Analytics. PDF title reads 'ETHOS AUTO COAS MAY2026'.
Where Modified Aminos ranks by compound
Modified Aminos appears in 2 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
2026-09-299/10 — first assessment (rubric v2); not awarded: lab-hosted (Ethos Analytics has no public lookup; vendor-hosted PDFs)
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.
Modified Aminos: the caveat
Ethos Analytics has no public lookup portal, so the certificates cannot be checked at the lab — only downloaded from the vendor; the PDF's own title is 'ETHOS AUTO COAS MAY2026', which reads as a template. Purity is printed as '>99%', not a measured figure. The Sheridan, WY address is a registered-agent address used by thousands of companies, disclosed here as such. Bank payment is discounted 10%. Trustpilot review count rose from 187 to 258 in eleven days on a paid subscription.
07
Where the evidence points
Where the evidence points
Purgo Labs 10/10
We earn nothing from Modified 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 9/10. Modified Aminos is stronger on 5 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 Modified Aminos legit?
Modified Aminos scores 9/10 on our rubric, has an independently viewable rating of 4.8 (258 reviews), and names its lab (Ethos Analytics). Caveat: Ethos Analytics has no public lookup portal, so the certificates cannot be checked at the lab — only downloaded from the vendor; the PDF's own title is 'ETHOS AUTO COAS MAY2026', which reads as a template. Purity is printed as '>99%', not a measured figure. The Sheridan, WY address is a registered-agent address used by thousands of companies, disclosed here as such. Bank payment is discounted 10%. Trustpilot review count rose from 187 to 258 in eleven days on a paid subscription.
Which is cheaper, Purgo Labs or Modified Aminos?
On the 1 compound-and-size rows where we have dated prices from both, Modified Aminos lists lower on 1 and Purgo Labs on 0. Purgo's list prices drop 20% with code HEALTH.
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 Modified Aminos. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.