Disclosure: Purgo Labs is our affiliate partner, and so is Rivn Peptides. 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
No contradictions among its own claims — No contradictions found across site claims (checked Aug 2026)
Freedom Diagnostics (Nashville) named on /testing; the certificate prints a search code (RIVN2606290308) for lookup at freedomdiagnosticstesting.com and reports 1.19mg measured vs 1mg label, 99.76% purity (lot IGF-217).
Legal entity and street address on the vendor's own pages: RIVN PEPTIDES LLC (Terms), 710 Nashville Pike Ste 104, Gallatin, TN 37066 (Contact).
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
RivnFreedom Diagnostics (Nashville) named on /testing, per-batch
Freedom Diagnostics (Nashville) named on /testing, per-batch
Lab-hosted COAs
PurgoVerify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
Verify-at-lab links to sterigenixanalytical.com / freedomdiagnosticstesting.com
RivnFreedom Diagnostics certificate prints Search Code RIVN2606290308 for lookup at freedomdiagnosticstesting.com (read 6 Sep 2026)
Freedom Diagnostics certificate prints Search Code RIVN2606290308 for lookup at freedomdiagnosticstesting.com (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
RivnCertificate carries lot IGF-217 (IGF-1LR3 1mg)
Certificate carries lot IGF-217 (IGF-1LR3 1mg)
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)
RivnCertificate reports 1.19mg measured vs 1mg label, 99.76% purity
Certificate reports 1.19mg measured vs 1mg label, 99.76% purity
Ungated
PurgoCOAs on product pages without login
COAs on product pages without login
RivnPublic certificate gallery now linked from the homepage /testing (7 images, read 6 Sep 2026; none yet for BPC-157 or TB-500)
Public certificate gallery now linked from the homepage /testing (7 images, read 6 Sep 2026; none yet for BPC-157 or TB-500)
Review base
Purgo4.7 / 101 on Trustpilot, claimed; three reviews below four stars, all replied to (complaint read 9 Oct 2026; was 4.7 / 99 on 2 Oct)
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)
Rivn4.9 / 634 on Trustpilot, claimed; two reviews below four stars on the whole profile (complaint read 9 Oct 2026; was 4.9 / 603 on 2 Oct)
4.9 / 634 on Trustpilot, claimed; two reviews below four stars on the whole profile (complaint read 9 Oct 2026; was 4.9 / 603 on 2 Oct)
Consistent claims
PurgoNo contradictions found across site claims (checked Aug 2026)
No contradictions found across site claims (checked Aug 2026)
RivnNot 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)
RivnSizes stated with prices across the 43-product catalog
Sizes stated with prices across the 43-product catalog
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)
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)
RivnRe-verified 19 Sep 2026: no on-site badge or counter contradicting the independently viewable record (the August mismatch is resolved); Trustpilot profile claimed and active at 4.9 / 561; no FDA warning letter, import alert or other regulator action found for Rivn Research LLC or Rivn Peptides (searched 19 Sep 2026)
Re-verified 19 Sep 2026: no on-site badge or counter contradicting the independently viewable record (the August mismatch is resolved); Trustpilot profile claimed and active at 4.9 / 561; no FDA warning letter, import alert or other regulator action found for Rivn Research LLC or Rivn Peptides (searched 19 Sep 2026)
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 Rivn Peptides
Read 24 September 2026 on the vendor's own pages
Lab-coded certificates, a published address and a large active review base; the unbacked ISO/GMP claims and the two-name identity are what keep it short of a perfect score. Affiliate partner since 19 Sep 2026; disclosed, not scored.
Checks out
✓Freedom Diagnostics (Nashville) named on /testing; the certificate prints a search code (RIVN2606290308) for lookup at freedomdiagnosticstesting.com and reports 1.19mg measured vs 1mg label, 99.76% purity (lot IGF-217). source
✓Legal entity and street address on the vendor's own pages: RIVN PEPTIDES LLC (Terms), 710 Nashville Pike Ste 104, Gallatin, TN 37066 (Contact). source
✓4.9 across 583 Trustpilot reviews on a claimed, active profile; most recent review 9 Sep 2026 (read 24 Sep 2026). source
✓Apple Pay, Google Pay, Visa, Mastercard and American Express at checkout. source
Could not verify · flags
?'ISO 9001 certified facilities', 'Certified GMP' and the lab's ISO/IEC 17025 accreditation are vendor-stated with no certifying body or certificate number published.
?Trustpilot's own page notes reviews are not fact-checked; the 4.9 is a customer score, not a product test.
!The Terms name RIVN PEPTIDES LLC while the Privacy Policy names RIVN Research LLC — two entity names for one site (24 Sep 2026).
Lab and search code transcribed from our 6 Sep 2026 read (verificationScore evidence).
Where Rivn Peptides ranks by compound
Rivn Peptides appears in 10 of our compound rankings, top-3 in 6. Each ranking orders every scored vendor that sells the compound by rubric score, then verified price per mg.
2026-08-273/8 — first assessment under rubric v1 (corrected 19 Sep 2026: this row read 15/8, an impossible score, from a transcription error when the ledger was backfilled; the v2 row below records the original as 3/8)
2026-09-068/10 — re-issued under rubric v2 (was 3/8); not awarded: claims-consistent, clean-record
2026-09-1910/10 — claims-consistent and clean-record AWARDED (8/10 to 10/10). Disclosed timing: Rivn became an affiliate partner of ours the same day, which is what prompted the re-read, so the evidence is set out in full. In August its site showed a '4.9 / 1,247 reviews' widget against a Trustpilot record of 326 — one unverifiable claim costing two points. On 19 Sep 2026 we checked the homepage, /about, /testing and /faqs: the widget is gone, replaced by a section pointing at the real Trustpilot profile; no in-house review count appears anywhere; the FAQ's 99%+ purity claim matches the published certificates (99.81%, 99.91%); and a searchable 47-certificate library with per-lot purity, net content, heavy metals and endotoxin has replaced the 7 loose images we saw on 6 Sep. No regulator action found. The vendor fixed the defect; the rubric does not withhold points as a penalty for having once had one. Still vendor-stated and unverified: ISO 9001 facilities, 'Certified GMP', and the lab's ISO/IEC 17025 accreditation
2026-09-199/10 — CORRECTION, same day: claims-consistent WITHDRAWN (10/10 to 9/10). The award above was inconsistent with how we scored the same defect elsewhere. Rivn's site states 'Manufactured in ISO 9001 certified facilities', 'Certified GMP', and ISO/IEC 17025 for its laboratory, publishing no certifying body, certificate number or register entry for any of the three. We withheld this exact point from Ameano Peptides for marketing an 'accredited third-party' while naming no lab, and from Idun Peptides for 'accredited laboratories' plural against a single lab on every certificate — both vaguer claims than these. Our own evidence file had already recorded the three claims as unverified; we noted them and awarded the point anyway, which was an error. Disclosure: Rivn became our affiliate partner the same morning, and the re-read that caught this happened while the site owner was pressing to have our primary partner shown first, so the correction benefits a commercial interest of ours. It stands on the four prior rulings, not on that. The other 9 points are unchanged and the certificate library and removed review widget are real improvements. Next: the same criterion is being re-checked across all 59 vendors, our partners included — if it was applied loosely once it was probably applied loosely elsewhere
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.
Rivn Peptides: the caveat
Scored 10/10 on 19 Sep 2026, up from 8/10, and the timing is disclosed rather than buried: Rivn became an affiliate partner the same day, and that is what prompted the re-read. The two points it had been missing came from a single on-site '4.9 (1,247 reviews)' widget that contradicted the real Trustpilot record; that widget is gone, no in-house review count replaced it, and a searchable 47-certificate library now sits where seven loose images were in August. Full evidence and the exact pages checked are in the score history. Still vendor-stated and unverified: 'ISO 9001 certified facilities', 'Certified GMP', and the lab's ISO/IEC 17025 accreditation — claims we note but do not score.
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 9/10. Rivn Peptides 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 Rivn Peptides legit?
Rivn Peptides scores 9/10 on our rubric, has an independently viewable rating of 4.9 (634 reviews), and names its lab (Freedom Diagnostics). Caveat: Scored 10/10 on 19 Sep 2026, up from 8/10, and the timing is disclosed rather than buried: Rivn became an affiliate partner the same day, and that is what prompted the re-read. The two points it had been missing came from a single on-site '4.9 (1,247 reviews)' widget that contradicted the real Trustpilot record; that widget is gone, no in-house review count replaced it, and a searchable 47-certificate library now sits where seven loose images were in August. Full evidence and the exact pages checked are in the score history. Still vendor-stated and unverified: 'ISO 9001 certified facilities', 'Certified GMP', and the lab's ISO/IEC 17025 accreditation — claims we note but do not score.
Which is cheaper, Purgo Labs or Rivn Peptides?
On the 11 compound-and-size rows where we have dated prices from both, Rivn Peptides lists lower on 0 and Purgo Labs on 9 (2 equal). Purgo's list prices drop 20% with code HEALTH; Rivn Peptides's drop with code compoundreview15 (15% off).
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 Rivn Peptides. Scores come from the rubric, which has no partnership input, and the ordering rule on our scoreboard is disclosed.