Retail name for a synthetic fragment related to Thymosin Beta-4, studied in preclinical research for wound-healing and cell-migration pathways. The Peptide Index files it under Healing / tissue-repair peptide. Vendors also list it as “TB 500”, “TB500”, “Thymosin Beta-4”, “TB-4”.
As of Sep 25, 2026, the lowest listed price is $2.43/mg and the median current listing is $7.50/mg, across 138 vendors (199 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 $9.25/mg on Jul 14, 2026 to $8.00/mg on Sep 25, 2026 (−13.5%), 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 TB-500 (Thymosin Beta-4) price history chart.
| Vendor | $/mg | Price (USD) | Package |
|---|---|---|---|
| Glacier Aminos | $2.43/mg | $145.99 | 60mg vial |
| Evolve BioPep | $2.50/mg | $24.99 | 10mg vial |
| Pure Health Peptides | $2.97/mg | $89.00 | 30mg vial |
| Skye Peptides | $3.45/mg | $69.00 | 20mg vial |
| Sigma Peptides | $3.50/mg | $34.99 | 10mg vial |
Each vendor name links to its public-record trust profile. The TB-500 (Thymosin Beta-4) 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.