Vendor documentation review
Oath Research
Mixed Signals
6Testing/COA
7Transparency
3Track Record
6Pricing/Payments
8Operations
Disclosure: Scores are editorial assessments based on the documented methodology. Affiliate relationships do not determine scores; some outbound links may generate compensation for PepGuide. This page is informational and is not an endorsement or purchasing recommendation.
Verdict
Conflicting signals to flag. Oath publishes their own per-batch COA archive (verified directly, 8 BPC-157 batches at 99.02-99.67% purity). Testing claim is orthogonal HPLC + MS in US cleanroom. BUT PeptideScore (Finnrick-backed data) shows Retatrutide, Semaglutide, and Tirzepatide all at E Bad with an "elevated lead contamination" description based on 1 sample each. Small independent sample size, but the heavy-metal flag is worth knowing about.
Documented strengths
- Batch COA archive verified on their site (per-batch purity 99.02-99.67%)
- Triple-pass HPLC + mass spec testing claim
- US cleanroom (Gilbert, AZ)
- Independent US lab verification of fill amount
- Card-forward payments with buyer protection: Visa, Mastercard, Discover, and Amex, plus Venmo and direct bank payment, through a PCI-DSS compliant gateway
- Scannable batch verification workflow
Considerations
- No internal heavy metals or sterility testing on any COA
- PeptideScore (Finnrick-backed) shows E Bad on Reta/Sem/Tirz with lead contamination description
- Only 1 independent sample per GLP-1, small but concerning
- Highest per-mg pricing in the peer set on the benchmarked compounds, with no single-vial value wins
- Rebrand from Oath Peptides is recent
- COA archive uses Freedom Diagnostics but site does not prominently name the lab
Vendor facts
LocationGilbert, AZ
Own COAs99.0-99.7%
Contaminant TestingEndotoxin: Yes (Freedom USP <85>, 4 of 5 COAs) + Heavy Metals: Not internally; FAILING externally (Finnrick lead on Reta/Sema/Tirz, Feb 2026) + Sterility: No
PaymentsVisa/MC/Discover/Amex + Venmo + bank (PCI-DSS gateway)
3P flagPb contam.
Samples1/product
Tests reported
HPLC PurityMass SpectrometryNet Peptide ContentEndotoxin (USP <85>, 4 of 5 COAs)Fill Verification
Summary
Good documentation on their side; independent GLP-1 testing raises questions. Worth verifying any GLP-1 purchase with an independent sample before committing to a protocol.