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Recovery Research
TB-500 Peptide (Thymosin Beta-4)
Lyophilized in the USA4963 g/molThymosin β-4 / fragment
TB-500 is a synthetic research peptide. It is modeled on regions linked to thymosin beta-4 activity. Labs study its possible role in cell migration and actin regulation.
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Your purchasing batch
5513X
Certificate on record · 3 lots published
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Per-batch COA access
Every order ships with certificate access for its lot
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Verified test results
Every batch, independently verified.
Each batch is analyzed by an independent third-party laboratory before release. The lots below were tested by Chromate and ILS Laboratories. Below is the report for lot 5513X, summarized from the certificate the lab published.
ILSPASS
ILS Laboratories
Independent · ISO/IEC 17025 accredited
Certificate of Analysis · COA-2026-05SGPO
99.73%
Purity by HPLCSPEC ≥ 95.0%
Lot
5513X
Tested
Sep 24, 2026
Labeled
10mg
Measured
10.63 / 10.7mg
ISO 17025 accreditedFentanyl free3 lots on record
View the signed certificate →
Certificate results✓ 6 passed · 2 reported
Appearance
Per certificate
Good
PASS
Identity
HPLC
Confirmed
PASS
Purity
HPLC (2 samples)
99.73 / 99.65%
SPEC ≥ 95.0%
PASS
Net peptide content
HPLC (2 samples)
10.63 / 10.7mg
REPORT ONLY
REPORTED
Sterility
PCR
No growth
No growth
PASS
Endotoxins
USP <85>
0.213EU/mL
REPORT RESULT
REPORTED
Heavy metals
ICP-MS
Not detected
As, Cd, Cr, Hg, Pb
PASS
Fentanyl screen
Per certificate
Not detected
PASS
Every batch on record
Every lot we have published for this compound, grouped by the lab that tested it, newest first. Open any certificate below, exactly as the lab released it.
ILS Laboratories2 certificates
Side by side
How Disguised compares.
Disguised
Typical supplier
Per-batch third-party COA
Yes
Rarely provided
ISO 17025 lab testing
Yes
Inconsistent
HPLC purity verified
Yes
Often unverified
Sterility tested
Yes
Rarely
Endotoxin tested
Yes
Rarely
Heavy metal tested
Yes
Rarely
Fentanyl screening
Yes
Not standard
Made & tested in the USA
Yes
Often overseas
Discreet, tracked shipping
Yes
Varies
Technical specifications
Compound Information
Read the TB-500 (Thymosin Beta-4) research guideCompare BPC-157 vs TB-500Molecular Profile
What is TB-500 (Thymosin Beta-4)?
Molecular FormulaC₂₁₂H₃₅₀N₅₆O₇₈S
Molecular Weight4963g/mol
Peptide ClassThymosin β-4 / fragment
Storage Requirements
Stability information.
Avoid freeze/thaw cyclesProtect from lightRefrigerate after reconstitution
−20°C
Lyophilized powder, as shipped
The most stable form. Store cold and protected from light until it is reconstituted.
2–8°C
After reconstitution
Refrigerate once reconstituted and keep it protected from light.
Peer-reviewed literature
The research behind this compound, cited in full.
Every reference below is a published, peer-reviewed record, linked to its PubMed entry. Provided for educational reference only - not product claims.
01Joint diseases and related surgery · 2026Effects of BPC-157 and TB-500 on Achilles tendon healing in rats: A histopathological and biomechanical studyBiçer O, et al.02Journal of chromatography. B, Analytical technologies in the biomedical and life sciences · 2024Simultaneous quantification of TB-500 and its metabolites in in-vitro experiments and rats by UHPLC-Q-Exactive orbitrap MS/MS and their screening by wound healing activities in-vitroRahaman KA, et al.03Analytical biochemistry · 2017Adsorption effects of the doping relevant peptides Insulin Lispro, Synachten, TB-500 and GHRP 5Judák P, et al.04Journal of chromatography. A · 2012Doping control analysis of TB-500, a synthetic version of an active region of thymosin β₄, in equine urine and plasma by liquid chromatography-mass spectrometryHo EN, et al.05Drug testing and analysis · 2012Synthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potentialEsposito S, et al.
Important research notice
Not for human, veterinary, or food use. This product is sold exclusively for laboratory research purposes. It is not intended to diagnose, treat, cure, or prevent any disease, and has not been evaluated by the FDA.
All referenced publications and registries are sourced from peer-reviewed journals and official registries. They are provided for educational reference only and are not product claims.
By purchasing, you confirm you are a qualified researcher and will handle this product in accordance with all applicable laws and regulations.
Ready when you are
Nothing ships without paperwork. Every lot is on record.
The lot on this page links to the signed certificate for that batch.
3Lots on record
99.73%HPLC purity, latest lot
17025ISO/IEC accredited lab