TB-500

Thymosin beta-4 fragment used in systemic repair models.

Thymosin beta-4 fragment used in systemic repair models
Purity ≥ 99.8% (HPLC)
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The why

TB-500 is a synthetic fragment of naturally occurring Thymosin beta-4. Research centers on actin sequestration, cell migration and systemic tissue repair.

Key ingredients

TB-500 10 mg
Sterile lyophilized powder

Certificate of Analysis

Every lot, tested and documented.

Independent third-party analysis on every TB-500 lot by Vanguard Laboratory (A2LA accredited). Purity, quantity, identity, heavy metals, endotoxins and bioburden. The results below are pulled straight from the signed report.

Verified by Vanguard HPLC-UV/VIS ICP-MS USA-shipped

Vanguard Laboratory · Level 3 verified

TB-500

Open signed COA

Lot number

TB.10.A

Laboratory ID

V260617-22008

Date reported

6/25/2026

Report number

V260617-22 008

Chromatographic purity

>99.80%

Quantity per vial

10.77 mg

Endotoxins (LAL)

Pass - <5.00 EU/mg

Bioburden (USP 61)

Pass - No Growth Detected

Heavy metals (ICP-MS)

Not detected

Signed by

Dustin Newman, Laboratory Director

Values above are transcribed from the Vanguard Laboratory report for lot TB.10.A. Heavy metals reported as ND (not detected) for arsenic, cadmium, lead and mercury. Open the signed PDF for chromatograms and the full analyte table.

What we test

Purity + identity
>99.80%
HPLC-UV/VIS chromatographic purity against a reference standard.
Quantity
10.77 mg
Confirms the vial holds at least what the label says.
Heavy metals
Not detected
ICP-MS screen for arsenic, cadmium, lead and mercury.
Endotoxins + bioburden
Pass - <5.00 EU/mg
LAL endotoxin assay and USP 61 microbial count screening.