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Blind Peptide Testing

Third-party HPLC and mass spec results the analyst cannot bias toward any vendor

Coded submissions, USP-referenced methods, private COA in 5–7 business days

Request a Blind Testing QuoteSee Group Testing
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How Blind Testing Works

1. Coded Intake

You submit under a code. Vendor name is stored separately from the lab record.

2. Blinded Analysis

HPLC and LC-MS are run against USP references with no vendor context.

3. Locked Data

Raw chromatograms are locked before any vendor information is unblinded.

4. Private COA

COA is delivered to you against the code. Public release is opt-in.

Who uses blind peptide testing?

  • Research communities and forum group buys that want an independent COA the vendor cannot influence.
  • Compounding pharmacies auditing incoming API against supplier COAs.
  • Researchers publishing results who need a defensible chain-of-custody record.
  • Buyers comparing suppliers head-to-head without tipping off either vendor.
HPLC purity testing detailsMass spec identity testingThird-party verificationThird-party vs manufacturer COA

Blind Peptide Testing FAQ

The analyst running the HPLC and mass spec sees only a coded sample ID. Vendor name, expected purity, and any prior COA are withheld until after the raw data is locked. That prevents confirmation bias and keeps the result defensible if disputed.

A manufacturer's COA is self-issued, uses methods the manufacturer chose, and cannot be independently audited. A blind ACS COA is issued by an independent lab with no financial relationship to the vendor and can be verified against raw chromatograms.

Blind purity + identity on a single peptide typically runs $150–$300. Group testing that splits one submission across multiple buyers reduces the per-buyer cost significantly. Request a quote for exact pricing.

5–7 business days from sample receipt. Rush service is available on request.

Only if you ask us to. By default your COA is private and only shared with the submitter. Public verification is opt-in.

Yes. Blind testing and group testing were built for community-organized verification. One organizer can submit a sample on behalf of a group and share the COA with participants.

Reversed-phase HPLC for purity against USP <621> references, and LC-MS or MALDI-TOF for molecular weight confirmation. Optional add-ons: LAL endotoxin (USP <85>), residual solvents (GC-MS), and heavy metals (ICP-MS).

Overnight courier with cold packs, in the original sealed vial where possible. We supply detailed shipping instructions and a coded submission form when you request the quote.

Ready to Get Started?

Contact us today for a free consultation and customized quote for your peptide testing needs.

(561) 513-8435cpierre@acslabtest.com