Glossary · 2026-09-24
By Alice Kay · Last reviewed 24 Sep 2026
Thymosin peptides, laboratory definition
Research-use notice: This article summarizes published scientific literature for educational purposes. It is not medical advice and does not provide dosing, administration or human-use information. Findings described in the literature do not apply to any BlueNex Labs product, which is supplied only for in-vitro laboratory research and not for human or animal use.
Thymosin is a family name, not a single catalogue SKU. Thymosin alpha-1 is a 28-residue thymic peptide with its own research note and its own 10 mg vial. TB-500 on this site is named as a thymosin beta-4 fragment used in actin-binding and cell-migration models, with its own 10 mg vial. A family name on a purchasing form is incomplete until the sequence and the SKU are written down.
For the TB-500 guide, see What is TB-500?. For the alpha-1 guide, see thymosin alpha-1. The TB-500-only vial's report is the TB-500 10 mg certificate. The 5 mg/5 mg blend is a different file. One PDF does not replace the other. BPC-157 is a gastric pentadecapeptide, not a thymosin.
Frequently asked questions
- Is TB-500 the same sequence as thymosin alpha-1?
- No. Thymosin alpha-1 is a 28-residue thymic peptide. TB-500 is named here as a thymosin beta-4 fragment. Confirm the mass on the lot report rather than equating the names.
Research use only. BlueNex Labs does not provide medical or veterinary advice. Confirm your institution’s policies before purchase. How a comparison or class note is checked sits on documentation standards. Articles are written and reviewed by Alice Kay, Ph.D.