Disclosure: Purgo Labs is our affiliate partner, and so is BioLongevity Labs (referral link only, no code). 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
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)
Lower list price on 4 of 4 like-for-like rows.
Larger independent review base: 4.7 (101 reviews) vs none on record.
BioLongevity Labs
Names its labs — SafeCert Labs on the homepage FAQ; MDx BioAnalytical Laboratory and BioRegen on the product-page COA instructions.
Batch-numbered certificate images viewable without an account.
02
The 10 criteria, side by side
10/10 vs 8/10 · one point each, no weighting
Named lab
PurgoSteriGenix and Freedom Diagnostics named per lot
SteriGenix and Freedom Diagnostics named per lot
BioLongevitySafeCert Labs, MDx BioAnalytical Laboratory and BioRegen named on-site
SafeCert Labs, MDx BioAnalytical Laboratory and BioRegen named on-site
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
BioLongevityMDx BioAnalytical certificate COA261565 states 'Searchable via mdxbiolabs.com' with search code 261565 — read 6 Sep 2026
MDx BioAnalytical certificate COA261565 states 'Searchable via mdxbiolabs.com' with search code 261565 — read 6 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
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 BioLongevity Labs
Read 5 September 2026 on the vendor's own pages
An established company with a real address and named laboratories, undercut by a removed Trustpilot profile and a site that disagrees with itself about which lab tests what, how many products it sells, and what its own company is called. The 'sale' prices are the real prices. Read the certificate for your batch and note which lab issued it.
Checks out
✓Names its labs — SafeCert Labs on the homepage FAQ; MDx BioAnalytical Laboratory and BioRegen on the product-page COA instructions. source
✓Batch-numbered certificate images viewable without an account. source
✓Prices verified to the cent. 5 Sep 2026 sale prices: BPC-157 10mg $49.99, TB-500 10mg $82.49, NAD+ 500mg $124.99; by 17–18 Sep 2026 all three were at list (exactly 2×): $99.97 / $164.97 / $249.97. source
Could not verify · flags
?Trustpilot profile is REMOVED ('goes against our guidelines', read 5 Sep 2026). No independent review base exists.
?Lab-side verification — the product page says MDx and BioRegen reports can be looked up by code/QR, but the certificates we found are images on the vendor's server and we did not confirm a lookup.
?Net content — certificate images could not be read from outside.
?Any semaglutide, tirzepatide or retatrutide — none in the catalog.
!Homepage FAQ: every batch has a certificate 'from SafeCert Labs'. BPC-157 page: current batches are tested by MDx BioAnalytical or BioRegen; SafeCert appears on 'a number of earlier batches'.
!Catalog size is '150+' on the homepage, '80+' on About, and 51 results on the peptides category page.
!The company is 'F2 Nutrition LLC' in the footer and 'F2 Nutrition Inc.' on the Contact page; the Terms give two different business addresses.
!Shipping page says returns are prohibited, then describes a 10-day return with a 15% restocking fee.
!Homepage says an account is required to buy; the shipping page says registration is optional.
!Removed Trustpilot profile. Trustpilot removes profiles for guideline violations; the reason is not published. We score the vendor as having no independent review base.
!Every basket price is a 'sale' at roughly half a listed regular price — permanent-sale pricing.
!Growth-factor products (an IGF-1 analog, a follistatin product) in the flagship line.
!A third-party forum alleges some product is sourced from an overseas manufacturer despite 'USA manufactured' branding — unverified, recorded as a lead only.
F2 Nutrition LLC (footer) / F2 Nutrition Inc. (Contact) · 405 Rothrock Rd #106, Akron, OH 44321 · separate Fort Lauderdale address for DMCA notices
Verify at the lab Transcribed by Compound Review; the laboratory's report is the record.
Where BioLongevity Labs ranks by compound
BioLongevity Labs appears in 4 of our compound rankings. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
2026-09-068/10 — re-issued under rubric v2 (was 4/8); not awarded: review-base, claims-consistent
2026-09-178/10 — became an affiliate partner (tracking link only; no code applies at checkout yet, so none is printed). Score unchanged — partnership is not a rubric input
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.
BioLongevity Labs: the caveat
Trustpilot profile REMOVED for guideline violations (read 5 Sep 2026) — no independent review base. The homepage FAQ says every batch is tested by SafeCert Labs while the product page says current batches are tested by MDx BioAnalytical or BioRegen and SafeCert only did 'earlier batches'. Catalog size is stated as 150+, 80+ and 51 on three pages. Entity appears as both LLC and Inc.; two different addresses on one Terms page. Every basket price is a 'sale' price at roughly half a listed regular price. No semaglutide, tirzepatide or retatrutide.
07
Where the evidence points
Where the evidence points
Purgo Labs 10/10
BioLongevity Labs is an affiliate partner (referral link only, no code); we point you to our top-scored partner instead. Purgo Labs holds every rubric point — certificates checkable at the lab, measured net content per lot — and is cheaper after codes on 4 of 4 like-for-like vials.
Affiliate links, disclosed. Purgo Labs is our primary partner; BioLongevity Labs is a partner too, by referral link only. Partnership is not a rubric input.
Purgo Labs, on the evidence: 10/10 rubric points against 8/10. BioLongevity Labs is stronger on 2 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 BioLongevity Labs legit?
BioLongevity Labs scores 8/10 on our rubric, has no independent record (its Trustpilot profile has been removed), and names its lab (SafeCert Labs · MDx BioAnalytical · BioRegen). Caveat: Trustpilot profile REMOVED for guideline violations (read 5 Sep 2026) — no independent review base. The homepage FAQ says every batch is tested by SafeCert Labs while the product page says current batches are tested by MDx BioAnalytical or BioRegen and SafeCert only did 'earlier batches'. Catalog size is stated as 150+, 80+ and 51 on three pages. Entity appears as both LLC and Inc.; two different addresses on one Terms page. Every basket price is a 'sale' price at roughly half a listed regular price. No semaglutide, tirzepatide or retatrutide.
Which is cheaper, Purgo Labs or BioLongevity Labs?
On the 4 compound-and-size rows where we have dated prices from both, BioLongevity Labs lists lower on 0 and Purgo Labs on 4. 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, as we do from BioLongevity Labs. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.