Disclosure: Purgo Labs is our affiliate partner; we earn nothing from Petratide Science. 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
Independent review base (50+ on an external platform) — 4.7 / 95 on Trustpilot (re-read 29 Sept 2026; was 4.7 / 88 on 18 Sept)
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 5 like-for-like rows we have on record (see table).
ILS Labs certificate for BPC-157 10mg, lot PS01-BPC10L (COA-2026-XWWEPY; received 3 Jun, analysed 10 Jun 2026): purity 99.45% by HPLC, net peptide content 10.54 mg, identity confirmed, sterility no growth, endotoxin ≤0.05 EU/mL, heavy metals within USP <233>, fentanyl screen negative. Read through a registered account.
The same report on the lab's own portal: 'ILS Laboratories Verified Certificate … This certificate is verified and authentic', with the full elemental-impurity table (As 0.13 ppm, Pb 0.16 ppm …).
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
PetratideILS Labs (San Diego, CA) on the BPC-157 10mg certificate COA-2026-XWWEPY, lot PS01-BPC10L, analysed 10 Jun 2026; Freedom Diagnostics on later batches — read 1 Oct 2026 through a registered research account
ILS Labs (San Diego, CA) on the BPC-157 10mg certificate COA-2026-XWWEPY, lot PS01-BPC10L, analysed 10 Jun 2026; Freedom Diagnostics on later batches — read 1 Oct 2026 through a registered research account
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
PetratideOpened on the lab's own portal (portal.ils-lab.com/verify/3qWpsMEdsmsyYh9o) on 1 Oct 2026: 'ILS Laboratories Verified Certificate … verified and authentic', same lot, same figures
Opened on the lab's own portal (portal.ils-lab.com/verify/3qWpsMEdsmsyYh9o) on 1 Oct 2026: 'ILS Laboratories Verified Certificate … verified and authentic', same lot, same figures
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
PetratideCOA library lists 148 batch certificates across 90 compounds, one card per compound with a batch switcher (e.g. TSM 20mg: ILS #01, ILS #02, Freedom #03, Freedom #04); the BPC-157 report carries lot PS01-BPC10L
COA library lists 148 batch certificates across 90 compounds, one card per compound with a batch switcher (e.g. TSM 20mg: ILS #01, ILS #02, Freedom #03, Freedom #04); the BPC-157 report carries lot PS01-BPC10L
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)
PetratideCertificate reports Net Peptide Content 10.54 mg on a 10mg label (105%), purity 99.45% by HPLC, identity confirmed, sterility, endotoxin, heavy-metal and fentanyl panels
Certificate reports Net Peptide Content 10.54 mg on a 10mg label (105%), purity 99.45% by HPLC, identity confirmed, sterility, endotoxin, heavy-metal and fentanyl panels
Ungated
PurgoCOAs on product pages without login
COAs on product pages without login
PetratideNot awarded
Review base
Purgo4.7 / 95 on Trustpilot (re-read 29 Sept 2026; was 4.7 / 88 on 18 Sept)
4.7 / 95 on Trustpilot (re-read 29 Sept 2026; was 4.7 / 88 on 18 Sept)
PetratideNot awarded
Consistent claims
PurgoNo contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
Petratide'7x panel testing · every batch' matches the seven panels printed on the ILS report (identity, purity, quantity, sterility, endotoxins, heavy metals, fentanyl); no accreditation or cGMP claim made without a body (1 Oct 2026)
'7x panel testing · every batch' matches the seven panels printed on the ILS report (identity, purity, quantity, sterility, endotoxins, heavy metals, fentanyl); no accreditation or cGMP claim made without a body (1 Oct 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)
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)
PetratideNot awarded
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)
PetratideNo on-site review badge; a vendor-run /official page warning about impersonator domains; no regulator action found (checked 1 Oct 2026); payment rails not examined
No on-site review badge; a vendor-run /official page warning about impersonator domains; no regulator action found (checked 1 Oct 2026); payment rails not examined
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 Petratide Science
Read 1 October 2026 on the vendor's own pages
Behind the login this is a well-documented vendor: a certificate we opened on the lab's own portal, a lot on every one of 148 batch records, measured content, and a named LLC. It loses ungated because none of that is visible before you register, identity because it prints no address, and review-base because 41 Trustpilot reviews is short of our line. 7/10 once read from inside, up from the 0/10 we could see from outside. The thing to get right is the domain: order only from petratidescience.com, the one the lab reports and the Trustpilot profile are attached to.
Checks out
✓ILS Labs certificate for BPC-157 10mg, lot PS01-BPC10L (COA-2026-XWWEPY; received 3 Jun, analysed 10 Jun 2026): purity 99.45% by HPLC, net peptide content 10.54 mg, identity confirmed, sterility no growth, endotoxin ≤0.05 EU/mL, heavy metals within USP <233>, fentanyl screen negative. Read through a registered account. source
✓The same report on the lab's own portal: 'ILS Laboratories Verified Certificate … This certificate is verified and authentic', with the full elemental-impurity table (As 0.13 ppm, Pb 0.16 ppm …). source
✓A COA library of 148 batch certificates across 90 compounds — one card per compound, a batch switcher where a compound has been produced more than once (TSM 20mg has four batches across ILS Labs and Freedom Diagnostics). Latest report 23 Aug 2026. source
✓Legal entity in the terms: Petratide Science LLC (last updated 7 Apr 2026). A vendor-run page (/official) states it operates exactly one storefront and lists the tells of impersonator sites. source
✓Trustpilot: 4.2 across 41 reviews on a profile claimed in June 2026 (1 Oct 2026). source
Could not verify · flags
?Anything from outside a login — the homepage, /shop/, /coas/, /contact-us/ and every policy URL redirect to a 'Research Access' form. The certificates are real, but a buyer cannot see them, or a price, or the company name, before registering.
?A street address — the terms name Petratide Science LLC; the only contact anywhere is info@petratidescience.com.
?Payment rails — we did not place an item in a live account's cart. The contact FAQ mentions 'manual payment', which usually means bank or app transfers alongside or instead of cards.
!LOOKALIKE DOMAINS. petratidesciencellc.com, petratidescienceinc.com and petratidesciencelab.com each claim to be 'the official home' of Petratide Science; the one we opened runs keyword-stuffed copy, a '20% discount when paying with any crypto' banner, and has no review history. The vendor's own /official page says it runs exactly one storefront: petratidescience.com.
!Login wall on every page — the single reason this vendor is not an 8 or 9.
!GLP-class compounds sold under codes (PS-R3, PS-T2, PS-S1, PS-CG, PS-Maz, PS-SRV) as research material.
!All sales final: store credit or reshipment only, claims within 24 hours of delivery with photos.
!A VIP email list offers '10% off every order, forever' — a vendor newsletter code, not one we have tested or print.
Petratide Science LLC — terms & conditions (7 Apr 2026). No street address, no phone; info@petratidescience.com (1 Oct 2026).
Read through a registered account (site is login-walled); opened on the lab portal, 'verified and authentic'. Sterility, endotoxin, heavy-metal and fentanyl panels on the same report.
Where Petratide Science ranks by compound
Petratide Science appears in 5 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
2026-10-010/10 — first assessment (rubric v2); scored on public information — every URL redirects to a login form; Trustpilot 4.2 / 41 is under the 50-review line
2026-10-017/10 — 0/10 → 7/10 the same day, read through a registered account (LuvionBio precedent): ILS Labs report opened on the lab portal, 148 batch certificates, 10.54mg on a 10mg label, Petratide Science LLC named. Still withheld: ungated (login wall), identity (no address), review-base (41 reviews)
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.
Petratide Science: the caveat
Everything above is behind a login: the homepage, catalog, COA page, contact and policies all redirect to a 'Research Access' form logged out, so a buyer sees no price, no certificate and no company name before registering — that costs the ungated point. No street address anywhere (an email, info@petratidescience.com, is the only contact). Trustpilot's 41 reviews are under our 50-review line. GLP-class compounds are sold under codes (PS-R3, PS-T2, PS-S1, PS-CG, PS-Maz, PS-SRV). All sales final — store credit or reshipment only, claims within 24 hours of delivery. Payment rails not examined (we do not place items in a live account's cart). The real danger for a searcher is the lookalikes: petratidesciencellc.com, petratidescienceinc.com and petratidesciencelab.com all claim to be 'the official home' of Petratide Science with crypto-discount banners; the vendor's own /official page confirms it runs exactly one storefront, petratidescience.com. No affiliate relationship: the vendor does not offer one.
07
Where the evidence points
Where the evidence points
Purgo Labs 10/10
We earn nothing from Petratide Science. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — and is cheaper after codes on 3 of 5 like-for-like vials.
Purgo Labs, on the evidence: 10/10 rubric points against 7/10. Petratide Science 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 Petratide Science legit?
Petratide Science scores 7/10 on our rubric, has an independently viewable rating of 4.2 (41 reviews), and names its lab (ILS Labs). Caveat: Everything above is behind a login: the homepage, catalog, COA page, contact and policies all redirect to a 'Research Access' form logged out, so a buyer sees no price, no certificate and no company name before registering — that costs the ungated point. No street address anywhere (an email, info@petratidescience.com, is the only contact). Trustpilot's 41 reviews are under our 50-review line. GLP-class compounds are sold under codes (PS-R3, PS-T2, PS-S1, PS-CG, PS-Maz, PS-SRV). All sales final — store credit or reshipment only, claims within 24 hours of delivery. Payment rails not examined (we do not place items in a live account's cart). The real danger for a searcher is the lookalikes: petratidesciencellc.com, petratidescienceinc.com and petratidesciencelab.com all claim to be 'the official home' of Petratide Science with crypto-discount banners; the vendor's own /official page confirms it runs exactly one storefront, petratidescience.com. No affiliate relationship: the vendor does not offer one.
Which is cheaper, Purgo Labs or Petratide Science?
On the 5 compound-and-size rows where we have dated prices from both, Petratide Science lists lower on 5 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 Petratide Science. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.