TB-500 is one of the most frequently studied research peptides in the tissue-research space, and it is almost always mentioned in the same breath as BPC-157. This guide covers what TB-500 actually is, what it is studied for, and how it is handled in the lab — strictly in a research context, with no human-use claims.
What TB-500 is
TB-500 is a synthetic peptide corresponding to an active region of thymosin beta-4, a naturally occurring protein involved in cell structure and actin regulation. As a defined synthetic peptide, its identity is confirmed by mass spectrometry and its purity by HPLC — the two measurements that anchor any legitimate certificate of analysis. It is a stable, well-characterized compound, which is part of why it appears so often as a research subject.
What it is studied for
In the published research literature, thymosin-beta-4-derived peptides such as TB-500 have been investigated in animal and in-vitro models for their role in cell migration, actin dynamics, and tissue-response pathways. It is frequently paired with BPC-157 in comparative tissue-research contexts, which is why researchers often source the two together. As with everything sold here, TB-500 is a preclinical research compound — not an approved therapeutic — and claims describing outcomes in people are not supported and fall outside what a research supplier represents.
Reconstitution and handling
TB-500 is supplied lyophilized and reconstituted before use. The diluent volume you add sets the concentration — our free reconstitution calculator returns it instantly, and our reconstitution guide covers technique, including adding water gently down the vial wall and swirling rather than shaking. Bacteriostatic water is the standard diluent for a multi-draw vial; see our diluent comparison.
Storage
Store lyophilized material frozen and sealed; keep reconstituted solution refrigerated, away from light, and handled gently between draws. Our storage and handling guide has the specifics.
Confirming what you received
Like BPC-157, TB-500 is in high demand, which is exactly the condition under which under-tested and mislabeled material circulates. The only real protection is documentation: a current COA from a named independent lab, showing identity and purity, with a lot number matching your vial. Every Summit Research batch of TB-500 is tested eight times across independent laboratories with the COA published for the lot before listing. If reading these is new, start with how to read a peptide COA.
View third-party tested TB-500 at Summit Research →
TB-500 is sold strictly for laboratory and research use only. It is not an approved drug and is not for human or veterinary use. Nothing in this guide is medical advice or a claim regarding use in humans or animals. Provided for informational and research purposes only.