TitrateLab · Certificate of Analysis
Tested vendor:Peptide Club All Biotin results & stats

Biotin 99.4% Purity — Peptide ClubCertificate of Analysis · Independent third-party lab result

Tested purity 99.4% High purity · 99.40%
Dose vs label -7.0% Under the labeled dose
Evidence Source archived
Test date
2026-05-07
Testing lab
Freedom Diagnostics
Batch / lot
10B
Quantity
18.60 mg
label 20mg · tested 18.60 mg
Endotoxins
—
Assay method
HPLC + MS
Label dose
20mg
Context

How this result compares

We have catalogued 2 Biotin certificates; across the 2 with a purity result the median tested purity is 99.50%.

Tested 2026-05-07 by Freedom Diagnostics via HPLC + MS.

Peptide Club has 68 certificates in our corpus, including 2 for Biotin at a median tested purity of 99.50%.

Manufacturer
Peptide Club
View vendor profile
Source

Freedom Diagnostic

Source archived

We archived this certificate's source document — an immutable, SHA-256-fingerprinted copy held by TitrateLab (see Saved source document below). It stays verifiable even if the upstream page disappears.

Method
HPLC + MS
Test type
freedom_composite
Dose
20mg
Catalogued
2026-07-04
Saved source

Saved source document

sha256:12ba7da5cf5a206f… — immutable copy held by TitrateLab

Download the saved PDF (sha256 12ba7da5cf5a…)

Download saved source

Related

Other Biotin certificates

Peptide Club Biotin
99.6% 2026-05-07
Freedom Diagnostics
All Biotin results & stats
This certificate is part of TitrateLab's community-trust corpus. See more from Peptide Club or learn how trust scores are computed on the methodology page. New to lab reports? How to read a COA →