Vendor and compound
Semax from ZC Labs
ZC Labs lists Semax at $2.00 per mg, 51% under the $4.10 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Freedom Diagnostics Testing, averaging 99.95% purity. The cheapest listed price for Semax anywhere in the index is $1.67 per mg at GenX Peptides.
All Semax vendors · ZC Labs profile · scores 83.2 of 100, rank 11 · 1 certificate for this compound · verified 18 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $20 | $2.00 | -51% | Semax 10mg |
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. Codepepindex· 10% off applies at checkout.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| ZCLa2606260481 | 29 Jun 2026 | 99.95% | 10 mg → 11.41 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 Semax
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $3.50 | 1 |
| Ascend Science | 90.1 | $4.50 | 1 |
| Amino Club | 88.3 | $3.00 | 0 |
| Modern Aminos | 88.1 | $4.20 | 2 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $5.40 | 2 |
| Polaris Peptides | 86.6 | $4.00 | 1 |
| PeptidePlugs | 86.3 | $4.00 | 4 |
Ordered by overall evidence score. See every vendor listing Semax.
Questions
Is Semax from ZC Labs third-party tested?
Yes. 1 certificate for Semax from ZC Labs is 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 Semax cost at ZC Labs?
$2.00 per milligram, from 10 mg at $20. The peer median across every vendor we price for Semax is $4.10 per mg, so this is -51% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is ZC Labs a good place to buy Semax?
ZC Labs scores 83.2 of 100 on the published rubric and ranks 11 overall, computed from its documentation rather than from opinion. For Semax specifically it has 1 certificate on file. GenX Peptides lists it cheaper at $1.67 per mg.