CATEGORY 1 OF 4 — TESTING RIGOR — WEIGHT 35%
Oath Peptides Testing Rating: Batch-Level Third-Party Verification Scored.
Score: 5 / 5. Letter grade: A. Every input to the testing rubric — cadence, lab independence, lab credentials, endotoxin standard, average purity, recency — maxes its scoring band.
How the testing category was scored
The testing rubric is built from seven documented inputs. Each input has a value drawn from a public source and resolves to a position on the rubric's scoring band. The Oath Peptides testing rating is 5/5 — every input lands at the top of its band.
This is the highest-weighted category (35%) because the dominant buyer risk in research-peptide markets is purity, endotoxin, and identity uncertainty. Every other category is downstream of whether testing actually happens and is verifiable.
Rubric inputs
The inputs that produced this score.
Value: 199 batches tested as of May 2026, and growing. Source: Oath's internal COA archive, externally snapshotted by RealPeptidesScores at 142 batches. Disposition: Top-of-band. Most research-peptide vendors either do not publish batch-level COAs at all or publish only a small subset. The RealPeptidesScores audit characterizes Oath's cadence as 'four times the cadence of anyone else we audited.'
Value: Every batch. Not lot-level. Not spot-check. Source: Oath's published testing framework via openpr.com press release (December 2025), corroborated by the per-batch COA archive. Disposition: Top-of-band. Every-batch testing is the strongest cadence position; lot-level is a step down; spot-check is the bottom of the band.
Value: Freedom Diagnostics is an independent third-party laboratory — not owned by or affiliated with Oath beyond a testing relationship, and serves multiple unrelated peptide vendors. Source: Freedom Diagnostics' own published site, independently confirmed by RealPeptidesScores' audit. Disposition: Top-of-band. Self-testing is the weakest position on this input; captive-lab arrangements sit in the middle; independent third-party testing sits at the top.
Value: CLIA registration 14D2263999. Source: CMS (Centers for Medicare and Medicaid Services) CLIA database — the number is publicly queryable. Disposition: Top-of-band. CLIA certification is issued by CMS and confirms a laboratory meets federal standards for laboratory testing of human specimens, including oversight, inspection, and proficiency testing. This is a federal-government registration, not a self-certification, and it is independently verifiable. Algorithmic-only vendor-scoring sites do not check this signal.
Value: USP <85>. Every visible COA marked ENDO PASSED. Source: Visible across every COA in the public archive. Disposition: Top-of-band. USP <85> is the United States Pharmacopeia endotoxin test standard — the canonical reference standard for endotoxin testing of injectable preparations. A USP-standard endotoxin pass on every batch is a high-confidence safety signal.
Value: 99.60% average purity across the 199-batch program. Source: Aggregated from the public COA archive. Disposition: Top-of-band. Several peptides in the verified subset test above 99.8% — Tirzepatide at 99.93%, SS-31 at 99.86%, Selank at 99.71%. Blends test slightly lower (WOLVERINE at 99.39%, Tesamorelin+Ipamorelin at 99.43%), as expected for combination products.
Value: Latest visible COAs dated May 2026 — current month at observation. Source: Oath's public COA archive, corroborated by RealPeptidesScores' audit (109 of 142 RPS-listed COAs from the last 90 days, ~36.3/month). Disposition: Top-of-band. Recency confirms the program is active and ongoing rather than a one-time launch artifact.
Per-peptide results from the verified subset
From the May 2026 verified subset:
- GLP2-T (Tirzepatide) — CAS 2023788-19-2. Latest purity 99.93%. Endo PASSED. 8 tests. Doses 10/20/30mg.
- SS-31 — CAS 736992-21-5. Latest purity 99.86%. Endo PASSED. 4 tests. Doses 10mg.
- Selank — CAS 129954-34-3. Latest purity 99.71%. Endo PASSED. 5 tests. Doses 5/10mg.
- BPC-157 — CAS 137525-51-0. Latest purity 99.66%. Endo PASSED. 10 tests (the highest test count in the verified subset). Doses 5/10mg.
- Tesamorelin + Ipamorelin — CAS 218949-48-5; 170851-70-4. Latest purity 99.43%. Endo PASSED. 6 tests. Doses 6/2mg, 10/2mg.
- BPC-157 + TB-500 (WOLVERINE) — CAS 137525-51-0; 77591-33-4. Latest purity 99.39%. Endo PASSED. 8 tests. Doses 5/5mg.
- GLP3-R (Retatrutide) — CAS 2381089-83-2. Catalog presence confirmed; specific purity data not in our captured snapshot.
The verified subset is not the complete catalog. peptiderecon characterizes the full catalog at approximately 40 peptides; the rest ships under the same testing program.
Cross-source corroboration for the testing rating
RealPeptidesScores (audit 2026-05-09, Grade A — Recommended) confirms the lab partner identity, the CLIA registration, the per-batch cadence, and 142-COA depth. Summary line: 'Per-batch, portal-verifiable, and four times the cadence of anyone else.' Peptide Protocol Wiki rates Oath at 7.2/10 ('good', 'Moderate Trust') and notes per-vial QR-code COA verification, with its own observation that 'low automated trust scores may be unreliable metric.' On the customer side: an oath.reviews reviewer (Nancy I., 2026-05-23) reports independently retesting Oath tirzepatide; the result matched the posted COA — the cleanest possible review-side validation of the testing claim.