# Oath Peptides testing rating: 5/5 (Grade A) — part of the Oath Peptides ratings rubric > Oath Peptides testing rating scored 5/5 (Grade A) within the Oath Peptides ratings rubric. 199 batches tested by Freedom Diagnostics (CLIA 14D2263999). Every-batch cadence. USP <85>. 99.60% average purity. _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. **Score: 5 / 5 — Grade A (weight 35%)** ## 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. ## INPUT — Batch count tested **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 Most research-peptide vendors either do not publish batch-level COAs at all or publish only a small subset.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.' ## INPUT — Testing cadence **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. ## INPUT — Lab partner independence **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. ## INPUT — Lab credentials **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. ## INPUT — Endotoxin standard **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. ## INPUT — Average purity **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. ## INPUT — Test recency **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. ## References [1] Oath Peptides COA archive (public batch-level lab report archive on the brand site; searchable by peptide name, batch number, or CAS number). [2] RealPeptidesScores — Oath Research vendor listing. Grade A — Recommended. Lab partner verified as Freedom Diagnostics. Audit summary: 'Per-batch, portal-verifiable, and four times the cadence of anyone else.' Audit date 2026-05-09. — https://realpeptidescores.com/vendor/oath-research [3] Peptide Protocol Wiki — Oath Peptides vendor listing. Rating 7.2/10 ('good', 'Moderate Trust'). Notes Oath as one of few vendors with a complete GLP-1 lineup; verified physical address in Gilbert AZ. — https://www.peptideprotocolwiki.com/vendors/oath-peptides [4] peptiderecon — Oath vs competitors head-to-head comparison. Ranks Oath #1; verdict 'Oath Peptides delivers the best overall value' for US-based researchers prioritizing quality, speed, transparency, and service. — https://peptiderecon.com/suppliers/comparisons/oath-vs-competitors [5] oath.reviews (verified by amino.reviews). 4.8/5 from 69 verified reviews. Distribution 57 five-star, 11 four-star, 1 three-star, 0 two-star, 0 one-star. — https://oath.reviews/ [8] openpr.com — Oath Peptides press release dated 2025-12-22 announcing the Oath Good Research Supply Trademark Standard (HPLC purity, MS identity verification in accredited US labs, public COAs). — https://www.openpr.com/news/4325389/oath-peptides-launches-the-oath-good-research-supply-trademark [11] Freedom Diagnostics — independent commercial clinical laboratory in Franklin, Tennessee. CLIA registration 14D2263999. Operating since 2023. — https://freedomdiagnosticstesting.com/ --- A four-category scored rubric on one research-peptide vendor — testing, transparency, product range, value — built from public records, independent of the company under rating.