TB-500 is a synthetic peptide corresponding to the active actin-binding fragment of Thymosin Beta-4, supplied as a lyophilised powder. It is supplied strictly for laboratory research use only.

What research area is TB-500 associated with?

Published preclinical laboratory work in this class concerns actin-binding and cell-migration chemistry in vitro. We supply the material only; we make no representation as to any outcome, effect, or suitability for any purpose.

Is TB-500 approved for human use?

No. TB-500 is not a drug, supplement, food, cosmetic, or medical device, and has no approved human or veterinary indication. It is sold strictly for in-vitro laboratory research use by qualified professionals.

What purity is TB-500 supplied at, and how is it verified?

Each lot is assayed by HPLC and ships with its own lot-specific Certificate of Analysis, published in our COA registry. Purity figures are stated per lot - we do not publish a brand-wide specification in place of the actual certificate.

TB-500

Synthetic Thymosin Beta-4 fragment, supplied for laboratory research use only.

99.46% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

$89/ 10mg vial

$44.50 per vial with Buy 1, Get 1 Free

Buy 1, Get 1 Free· add 2, applied automatically

99.46% pure on this exact lot, verified by an independent lab, not by us
Tested in the USA. Ships within 1 business day, stored frozen, stable at room temperature until you mix it
Retest it at any lab. If it doesn't match our report, every dollar back

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All products currently listed on this site are for research purposes only.

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Proof, not promises. Every batch, tested by an outside lab.

Every batch of TB-500 is tested by an outside lab before it goes on sale — not by us. The one shipping now is lot 3XWAU3: 99.46% pure by HPLC, tested by Freedom Diagnostics on 14 Sept 2026. The signed report is right here. Purity is the number the lab measured, never “at least 99” — and a batch that misses its spec never ships.

TB-500 · 10mgLot 3XWAU3Live batch data

Purity99.46%

Passed

Tested by: Freedom Diagnostics
Tested on: 14 Sept 2026
Net content: 9.91 mg

Contaminant screens

Heavy metalsEndotoxinsMicrobialSolvents

See all lab reports

What happens before a vial reaches you

1Made in a controlled facilityDocumented, repeatable steps for every batch.
2Purity testedAn outside lab measures it and reports the exact number.
3Identity confirmedA second test proves it is what the label says.
4Report publishedSigned, filed by lot number, and public before the vial ships.

Live batch data

Freedom Diagnostics

Independent analytical lab

Certificate of Analysis

RESULT · PASS

Lot 3XWAU3Verified

TB-500 10mg

HPLC purity

99.46%

Pass · Meets spec

Tested

14 Sept 2026

HPLC-UV + LC-MS

Analytical results

Identity (LC-MS)ConfirmedPASS

Net content9.91 mgPASS

HPLC Chromatogram

Main peak 99.46% · other 0.54%

Alex JohnsonPrincipal Chemist

Authentichain · Verified 56×

Cell migrationactin regulation

Broad repairmulti-tissue

Anti-scarringtissue quality

How TB-500 works

A broadly-acting regenerative research peptide studied across several tissue-repair routes.

Cell migrationactin regulation

Studied for helping cells crawl toward a wound site through its effect on actin.

Broad repairmulti-tissue

Investigated for repair activity across heart, muscle, tendon and other injury models.

Anti-scarringtissue quality

Researched for laying down cleaner tissue with reduced scar formation.

For research use only. Mechanisms described reflect published research literature.

Every batch we've tested

Anyone can show you one good report. Here is every batch of TB-500 we have ever released, newest first, each with its own signed report. Nothing hidden, nothing cherry-picked.

5 batches on record · latest tested 14 Sept 2026

All lab reportsEvery TB-500 batch, on one page.The full testing history with every signed report. No login, no email wall.See all lab reports

What the studies found

Published findings on this compound, each linked to its source. Animal and lab results are context, not claims about this product.

Scar tissuePreclinical

Thymosin beta-4 lowers the number of scar-forming myofibroblasts in wounds, which reviewers link to less scarring and fibrosis.

vs untreated controls

Expert Opinion on Biological Therapy, 2012 · review

Untreatedmore scarring

TB-500less scarring

Directional finding — relative heights, not measured magnitudes.

Cell recruitmentPreclinical

In adult mouse hearts, thymosin beta-4 woke up dormant cells in the heart's outer layer and mobilised them to build new blood vessels.

vs untreated controls

TB-500faster migration

Untreatedbaseline

Directional finding — relative heights, not measured magnitudes.

Nature, 2007 · preclinical (mouse)

Brain protectionPreclinical

Given a full day after an embolic stroke, thymosin beta-4 significantly improved rats' scores on two neurological tests, with more myelinated nerve fibres and new vessels at the edge of the injury.

vs untreated controls

Untreatedmore injury

TB-500less injury

Directional finding — relative heights, not measured magnitudes.

Neuroscience, 2010 · preclinical (rat)

Full research: What Is TB-500? The Thymosin Beta-4 Fragment, Explained