Vendor and compound
Semax from Ascension Peptides
Ascension Peptides lists Semax at $5.00 per mg, 22% over the $4.10 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by MZ Biolabs, averaging 99.75% purity. The cheapest listed price for Semax anywhere in the index is $1.67 per mg at GenX Peptides.
All Semax vendors · Ascension Peptides profile · scores 79 of 100, rank 17 · 1 certificate for this compound · verified 18 Aug 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $50 | $5.00 | +22% | 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.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| 30-01260229 | 9 Feb 2026 | 99.75% | 10 mg → 10.12 mg | MZ Biolabs | Open |
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 Ascension Peptides third-party tested?
Yes. 1 certificate for Semax from Ascension Peptides is on file, signed by MZ Biolabs. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from.
How much does Semax cost at Ascension Peptides?
$5.00 per milligram, from 10 mg at $50. The peer median across every vendor we price for Semax is $4.10 per mg, so this is +22% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Ascension Peptides a good place to buy Semax?
Ascension Peptides scores 79 of 100 on the published rubric and ranks 17 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.