A naturally occurring thymic peptide studied in preclinical research for immune-pathway modulation. The Peptide Index files it under Immune-modulating peptide. Vendors also list it as “TA-1”, “TA1”.
As of Sep 25, 2026, the lowest listed price is $3.00/mg and the median current listing is $8.00/mg, across 93 vendors (106 comparable single-compound listings). Prices are normalized to US dollars per milligram of peptide, exclude shipping, and are refreshed nightly.
In the nightly price history, the daily median fell from $9.65/mg on Jul 14, 2026 to $9.00/mg on Sep 25, 2026 (−6.7%), based on 67 observed days. Days the crawl missed are left out, not filled in. The daily series is taken across each day’s comparable listings, so it can differ slightly from the current-listings median above. See the full Thymosin Alpha-1 price history chart.
| Vendor | $/mg | Price (USD) | Package |
|---|---|---|---|
| Evolve BioPep | $3.00/mg | $29.99 | 10mg vial |
| Crush Research | $3.51/mg | $35.10 | 10mg vial |
| Labrat Peptides | $4.00/mg | $39.99 | 10mg vial |
| Great Lakes Peptides | $4.00/mg | $40.00 | 10mg vial |
| Rarev Biolabs | $4.50/mg | $45.00 | 10mg vial |
Each vendor name links to its public-record trust profile. The Thymosin Alpha-1 price page lists every current listing.
Every night The Peptide Index reads vendors’ public catalog pages, records the listed price and stated peptide content, and divides one by the other to get a comparable $/mg. Blends and topical/cosmetic products are excluded from single-compound figures. Read the full methodology and how vendor signals are checked.