LabDoc Testing Methodology

LabDoc is not a laboratory. We commission an independent Australian partner laboratory to test research peptides sent by a partner company or by an individual customer. Every Certificate of Analysis (CoA) published on LabDoc carries the originating lab's name, the test date, the sample identifier, and the raw analytical method used.

What we test

• Identity - Liquid Chromatography-Mass Spectrometry (LC-MS). Checks for a mass signal consistent with the expected peptide under the laboratory's method and mass tolerance. Read the identity finding and any limitations on the report.
• Purity - High-Performance Liquid Chromatography (HPLC) at 214 nm. Reports peptide content as a percentage of total UV-absorbing peaks.
• Peptide content - Quantitative HPLC against a reference standard. Reports the actual mass of peptide present in the vial, separating labelled content from counter-ions, salts, and excipients.

For a plain-English introduction, read our mass spectrometry guide or compare LC-MS and HPLC.

Pass / fail thresholds

Results are classified against a fixed published threshold, so every result is judged the same way.

• Identity (LC-MS): pass requires a positive match to the labelled peptide.
• Purity (HPLC): the standard pass threshold is ≥ 95.0% peak area at 214 nm. Read this alongside the identity finding, content measurement and report limitations.
• Peptide content (Quant HPLC): reported as-is. A failing content figure does not invalidate purity but is published alongside it.

Turnaround time

LabDoc-issued Certificates of Analysis are typically available within 3-7 business days from laboratory receipt. Allow additional time for sample postage and intake. The laboratory window covers analytical testing, data review, and certificate preparation. Complex blends or re-tests may extend the window slightly; if so, you will be notified by email.

Chain of custody

Each submission receives a LabDoc sample identifier and packing instructions. Follow the intake address and handling requirements supplied for your order. The sample identifier connects the submission, laboratory record and issued COA; findings apply to the sample submitted for analysis.

Aggregated public data

LabDoc also aggregates publicly disclosed third-party CoAs from independent sources (e.g. Janoshik, Finnrick, AltheaScience). These are clearly distinguished from LabDoc-issued CoAs on every page. The source laboratory is named, and the original PDF is linked where available so the result is independently verifiable.

Verification

Every LabDoc-issued CoA carries a four-character sample identifier (e.g. LD-A7K2) and a QR code linking to the verification page. Anyone with the identifier can confirm the document is genuine and unaltered at labdoc.org/certificate-lookup.

What LabDoc does not do

LabDoc does not endorse, promote, sell or supply peptides. We do not provide medical advice. Lab results describe the specific sample tested - they do not warrant any other batch from the same company.