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Purity · passShop-provided sample

Glutathione × felixchem.is — lab test, February 2026

Sample label: Felix Chemical Supply
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Tested · submitted by Peptigrity Team Member 02PEPTIGRITY TEAM
Sample source: shop-provided. The shop chose and sent this vial. Samples bought at retail by a member carry more weight.How we weigh evidence →
HPLC Purity
99.75%
Excellent purity only
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Independent verification available

freedomdiagnosticstesting.com publishes a public verification portal. Any test attributed to this lab can be looked up and confirmed directly with the lab — so this result doesn't rest on our review alone.

This certificate carries no lookup code.

Test results

7 data points
Purity
99.75%
Endotoxins
Not tested
Heavy metals
Not tested
Stated qty
600 mg
Tested qty
598.05 mg
Qty match
100% of labeled · +0%
Batch / Lot
020526-GLU-C
Container
White Lyophilized Powder
Tested by

This is a purity and identity analysis. Sterility, endotoxins, and heavy metals were not screened — a high purity figure says nothing about those.

About this test

What’s in the vial

Label 600 mg · Lab measured 598.05 mg

100% of label, basis not stated — shown as printed. Reconstituted with 2 mL, a 50-unit draw holds 150 mg on both the label figure and the measured one.

One vial from this lot was weighed by the laboratory, not yours. This page reports what the certificate says; it does not recommend a dose.

Independent HPLC purity analysis of Glutathione from felixchem.is, performed by freedomdiagnosticstesting.com on February 12, 2026. Reported purity: 99.75%. Net content: 598.05 mg against 600 mg labeled (100% of label). Batch 020526-GLU-C. Sample source: shop-provided. Certificate of analysis attached.

Certificate of analysis

Original document
Issued by freedomdiagnosticstesting.com · Feb 12, 2026 · Batch 020526-GLU-C

Other lots of Glutathione from felixchem.is

LotTestedLabPurityvs labelStatus
022526-GLU-C (white)27 Feb 2026freedomdiagnosticstesting.com99.808%93%Unverified
101525-GLU-C25 Oct 2025freedomdiagnosticstesting.com99.742%94%Unverified
060525-GLU-113 Jun 2025Chromate99.795%102%Unverified

Batches this shop has published a certificate for, newest first. A lot whose printed value cannot identify a batch is not listed.

Related lab tests

8 tests

The 133 other Glutathione tests on Peptigrity range from 96.10% to 100.00%. This one sits at 99.75%.

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