Vendor and compound
Glutathione from PeptidePlugs
PeptidePlugs lists Glutathione at $0.030 per mg, 40% under the $0.050 peer median. 2 third-party certificates for this compound from this vendor are on file, assayed by Freedom Diagnostics Testing, averaging 99.78% purity. The cheapest listed price for Glutathione anywhere in the index is $0.020 per mg at ZC Labs.
All Glutathione vendors · PeptidePlugs profile · scores 86.3 of 100, rank 9 · 2 certificates for this compound · verified 29 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 1500 mg | $50 | $0.033 | -33% | Glutathione 1500mg |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| 189-04-DK | 8 Aug 2026 | 99.93% | 1500 mg → 1526.79 mg | Freedom Diagnostics Testing | Open |
| 137-02-SM | 15 Jun 2026 | 99.64% | 1500 mg → 1516.27 mg | Freedom Diagnostics Testing | Open |
Freedom Diagnostics Testing publishes a lookup, so these reports can be confirmed at the laboratory rather than taken from the vendor. How to check one.
Other vendors selling Glutathione
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | — | 2 |
| Ascend Science | 90.1 | $0.040 | 2 |
| Amino Club | 88.3 | $0.040 | 0 |
| Modern Aminos | 88.1 | $0.090 | 1 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $0.050 | 1 |
| Polaris Peptides | 86.6 | $0.100 | 0 |
| Simple Peptide | 84.9 | $0.050 | 1 |
Ordered by overall evidence score. See every vendor listing Glutathione.
Questions
Is Glutathione from PeptidePlugs third-party tested?
Yes. 2 certificates for Glutathione from PeptidePlugs are on file, signed by Freedom Diagnostics Testing. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. Freedom Diagnostics Testing also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does Glutathione cost at PeptidePlugs?
$0.030 per milligram, from 1500 mg at $50. The peer median across every vendor we price for Glutathione is $0.050 per mg, so this is -40% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is PeptidePlugs a good place to buy Glutathione?
PeptidePlugs scores 86.3 of 100 on the published rubric and ranks 9 overall, computed from its documentation rather than from opinion. For Glutathione specifically it has 2 certificates on file. ZC Labs lists it cheaper at $0.020 per mg.