Vendor and compound
Thymosin Alpha-1 from Simple Peptide
Simple Peptide lists Thymosin Alpha-1 at $8.60 per mg, 7% over the $8.00 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Freedom Diagnostics Testing, averaging 99.61% purity. The cheapest listed price for Thymosin Alpha-1 anywhere in the index is $3.90 per mg at Eternal Peptides.
All Thymosin Alpha-1 vendors · Simple Peptide profile · scores 77.2 of 100, rank 11 · 1 certificate for this compound · verified 28 Sept 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $86 | $8.60 | +7% | Thymosin Alpha-1 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 |
|---|---|---|---|---|---|
| THYMA10-052026-7 | 14 May 2026 | 99.61% | 10 mg → 10.14 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 Thymosin Alpha-1
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 87.7 | — | 2 |
| Amino Club | 86.1 | $4.00 | 0 |
| PeptidePlugs | 82.6 | $6.00 | 2 |
| Modern Aminos | 79.7 | $8.00 | 2 |
| Bench Grade Peptides | 79.4 | $12.10 | 0 |
| Hydro Research Peptides | 78.7 | — | 1 |
| Ascension Peptides | 74.4 | $7.10 | 2 |
| Curo | 73.9 | $6.00 | 0 |
Ordered by overall evidence score. See every vendor listing Thymosin Alpha-1.
Questions
Is Thymosin Alpha-1 from Simple Peptide third-party tested?
Yes. 1 certificate for Thymosin Alpha-1 from Simple Peptide 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 Thymosin Alpha-1 cost at Simple Peptide?
$8.60 per milligram, from 10 mg at $86. The peer median across every vendor we price for Thymosin Alpha-1 is $8.00 per mg, so this is +7% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Simple Peptide a good place to buy Thymosin Alpha-1?
Simple Peptide scores 77.2 of 100 on the published rubric and ranks 11 overall, computed from its documentation rather than from opinion. For Thymosin Alpha-1 specifically it has 1 certificate on file. Eternal Peptides lists it cheaper at $3.90 per mg.