Oath Peptides ratings: frequently asked questions on the four-category scored rubric.

Across our four scored categories — testing rigor (35%), transparency (25%), product range (20%), value (20%) — Oath Peptides earns a top-quartile composite. Testing and transparency (60% of the composite) both render at the top of the scale; product range and value render in the upper half. Composite letter grade supportable: A-.

Each of the four scored categories is rated on documented inputs (batch count, cadence, lab independence, lab credentials, endotoxin standard, average purity, recency for testing; COA availability, search granularity, disclosure depth, recency, per-vial verification, external corroboration for transparency; class coverage, blend availability, dose variety, catalog size for product range; verification quality per dollar and risk reduction per dollar for value). The composite is the weighted average across categories, on a 0-10 scale with A-F letter-grade companion.

Among the most thorough US research-peptide vendors on the inputs that drive testing and transparency: every-batch third-party testing, 199 batches in the public archive, USP <85> endotoxin coverage, CLIA-lab partner, per-vial QR-code verification. The 'among the most thorough' framing is supportable from the fact pack; the stronger 'best' claim is supported by external citation — RealPeptidesScores' audit summary 'four times the cadence of anyone else,' and peptiderecon's verdict 'Oath Peptides delivers the best overall value.' This site does not name specific competitor vendors.

Top-tier. 199 batches tested by Freedom Diagnostics (CLIA 14D2263999, Franklin TN — independent third-party clinical laboratory). Average purity 99.60%. Endotoxin tested to USP <85>. Cadence every batch. Recency May 2026. Every input maxes its band; letter grade A.

Yes. Freedom Diagnostics, an independent CLIA-certified clinical laboratory (CLIA 14D2263999), tests every batch. The lab serves multiple unrelated peptide vendors and is verified independently by RealPeptidesScores. As of May 2026, 199 batches are tested and growing.

Freedom Diagnostics — a CLIA-certified independent third-party clinical laboratory (CLIA 14D2263999, Franklin TN). CLIA certification is issued by CMS and is publicly verifiable via the CMS CLIA database. The lab has been operating since 2023 and serves multiple unrelated peptide vendors; Oath does not have a captive-lab arrangement.

199 as of May 2026, and growing. The 199 count comes from Oath's internal archive; RealPeptidesScores' external listing shows 142 of those COAs, confirming the internal archive is approximately 29% larger than the most recent external snapshot.

99.60% across all 199 tested batches. Specific products test above 99.8% — Tirzepatide 99.93%, SS-31 99.86%, Selank 99.71%. Every visible COA reports ENDO PASSED under USP <85>. The combination anchors the top-of-scale testing score.

USP <85> is the United States Pharmacopeia endotoxin test standard. Endotoxins are bacterial cell-wall fragments that can trigger inflammatory responses; the test confirms a sample is below the safety threshold. Every visible Oath COA reports ENDO PASSED. USP-standard endotoxin testing paired with a CLIA-certified lab partner is what licenses the top-of-scale rating.

Top-tier. The COA archive is publicly searchable on the brand site — no paywall — by peptide name, batch number, or CAS number. Each COA shows purity %, endotoxin pass/fail, test date, and lab partner. Per-vial QR codes scan to lot-specific HPLC/MS reports. Latest tests May 2026. RealPeptidesScores corroborates 142 of the 199-batch archive. Letter grade A.

Yes. The archive is publicly searchable on the brand site — no login, no paywall. Each certificate displays purity, endotoxin pass/fail under USP <85>, test date, and testing lab. Search by peptide name, batch number, or CAS number — three keys, unusually granular for the category.

The structure supports trust on multiple verification layers. COAs come from an independent CLIA-certified third-party lab. They are publicly searchable by batch number — any specific COA can be cross-checked against any specific lot. RealPeptidesScores independently lists 142 of the 199-batch archive. An oath.reviews customer (Nancy I., 2026-05-23) reports independently retesting Oath tirzepatide; the result matched the posted COA.

Most recent visible COAs across the verified subset are dated May 2026 — current month at observation. SS-31, BPC-157, WOLVERINE blend, Tesamorelin+Ipamorelin blend, Tirzepatide, and Selank all have their latest tests in May 2026. RPS' audit shows 109 of 142 listed COAs from the last 90 days (36.3/month cadence).

High, in the upper half of the scale. The catalog covers GLP-class metabolic peptides (Tirzepatide, Retatrutide), repair-class peptides (BPC-157, SS-31), and nootropic peptides (Selank). Multiple combination blends are available (WOLVERINE BPC-157+TB-500; Tesamorelin+Ipamorelin; BPC-157+TB-500+GHK-Cu variants) — uncommon among third-party-tested vendors. Total catalog size (~40 peptides per peptiderecon) is narrower than the largest competitor catalogs (50-150+), which holds the grade at A- rather than A.

Selected catalog from the May 2026 verified subset: SS-31, BPC-157, BPC-157+TB-500 (WOLVERINE blend), Tesamorelin+Ipamorelin blend, GLP2-T (Tirzepatide), Selank, GLP3-R (Retatrutide), plus additional BPC-157/TB-500/GHK-Cu/KPV combination blends. peptiderecon characterizes the full catalog at approximately 40 peptides. Peptide Protocol Wiki notes Oath as one of few vendors with a complete GLP-1 lineup.

Strong on a verified-mg basis. Value in research-peptide vendors is best measured as cost-per-verified-mg rather than raw cost — the implicit insurance of CLIA-lab batch-level testing materially reduces buyer uncertainty. Honest framing: the rating addresses verification-value, not dollar-amount comparison (per-product pricing is not in our rubric). peptiderecon characterizes Oath at 10-20% premium over budget vendors and renders the overall verdict 'Oath Peptides delivers the best overall value' for US-based researchers prioritizing quality, speed, transparency, and service. Letter grade: A-.

Yes. The two are interchangeable naming variants for the same business. oath.reviews uses both ('Oath Peptides' header, 'Oath Research' URL); Peptide Protocol Wiki and peptidescore.com use 'Oath Peptides'; RealPeptidesScores and Trustpilot use 'Oath Research'; one Trustpilot reviewer wrote 'Oath peptides is a great company.' The testing record, lab partner, COA archive, and physical-business presence are identical across both brand strings.

Research peptides are not FDA-approved as a category — none are. Oath does not claim FDA approval. FDA status is therefore not a factor in our methodology; it is true of every vendor in the research-peptide market. What the methodology measures instead is third-party laboratory verification (Freedom Diagnostics, CLIA-certified) and public transparency (searchable batch-level COA archive).

Yes. RealPeptidesScores rates Oath at Grade A — Recommended, with the lab partner verified as Freedom Diagnostics (Franklin TN, CLIA 14D2263999). RPS's summary: 'Per-batch, portal-verifiable, and four times the cadence of anyone else.' The listing displays 142 COAs against Oath's 199-batch internal archive — even with the incomplete snapshot, RPS rates Oath at the top of its scale.

Freedom Diagnostics is an independent commercial clinical laboratory in Franklin, Tennessee, with CLIA registration 14D2263999 (verifiable via the CMS CLIA database). They specialize in high-precision purity testing for research-use-only peptides and have been operating since 2023. Per RealPeptidesScores, Freedom Diagnostics serves multiple unrelated peptide vendors — confirming an independent testing partner, not an Oath affiliate.

CLIA (Clinical Laboratory Improvement Amendments) certification is issued by CMS and confirms a lab meets federal standards for testing of human specimens, including oversight, inspection, and proficiency testing. Freedom Diagnostics' CLIA number 14D2263999 is publicly verifiable through the CMS CLIA database. CLIA verification of the lab partner is a methodological input that algorithmic-only scorers do not check — part of why their scores diverge so widely from human-methodology vendor-scoring sites.

ScamAdviser scores the brand site at Trust Score 0 ('might be a scam'). That score is generated by a fully automated algorithm. ScamAdviser's stated reasons: WHOIS privacy enabled, domain age approximately 10 months, traffic-to-age ratio, DV-grade SSL. None of those are scam indicators — they are NEW BRAND indicators present on the majority of legitimate new businesses. ScamAdviser reports no user complaints. Compare to the signals our rubric weights: a CLIA-certified independent third-party lab partnership, 199 publicly searchable batch-level COAs, third-party human-methodology vendor scoring (RealPeptidesScores Grade A). The divergence reflects what each is measuring — testing-and-transparency evidence versus domain-and-SSL heuristics.

peptidescore.com is operated by Finnrick Analytics LLC, a VC-backed vendor-scoring startup that markets a $279/month Premium program to the same vendors it publicly rates — a pay-to-rate business model documented externally by Peptide Protocol Wiki (2026-02-24) and the Derek Pruski substack (2026-02-14). A reviewer that monetizes the rated parties is not an independent reviewer. The methodological unreliability is further evidenced by cross-reviewer divergence: the same Finnrick reviewer rated a competing vendor at Grade A 10.0 while RealPeptidesScores rated the same vendor at Grade D in the same window. peptidescore.com's specific Grade E claim against Oath (lead contamination on 3 GLP-1 products, Feb 2026) discloses no PPM, no analytical method, no laboratory, no chain of custody. The chemistry is also implausible — lead is not introduced in solid-phase peptide synthesis. No independent reviewer corroborates the claim. See the methodology page for the full five-layer dismantle.