Amino acids in the TB-500 fragment, Ac-LKKTETQ - the small active part of thymosin beta-4 it copies. An identity fact, not a product claim.
Esposito et al., Drug Test Anal, 2012Thymosin beta-4 fragment peptide
TB-500
A synthetic fragment of the protein thymosin beta-4, studied in laboratory and animal models of tissue repair. Supplied for laboratory research only.
Cells are not fixed shapes. To move at all - and they do move, crawling into a wound to close it - a cell has to take its own scaffolding apart and rebuild it. TB-500 copies the small part of a natural protein that does the gripping in that process. Supplied freeze-dried, for laboratory research only.
Current lot pricing
$109.00 AUD
Base vial price: $109.00 AUD
Vial size10 mg
Ships from Perth, Australia PostFree standard shipping over $250Plain, discreet packagingStore at 2-8 C
Supplied strictly as reference material for in-vitro laboratory research. Not a medicine, supplement, or food. Not for human or veterinary use.
Research use onlyWhy this molecule is studied
Why researchers study it.
The scaffolding inside a cell is built from a protein called actin. Pull it apart, rebuild it somewhere else, and the cell has moved. That is genuinely how a wound closes: cells crawl into the gap and rebuild it.
A protein the body makes, called thymosin beta-4, grips actin and is studied for its part in that rebuilding. TB-500 is a seven-amino-acid fragment copying the piece of thymosin beta-4 that does the gripping.
That distinction matters more here than on most pages. Thymosin beta-4 is 43 amino acids long; TB-500 is seven of them. Most of the well-known findings - wound repair, cell movement, new blood vessels - are about the full protein, not this fragment. The fragment's own record is thinner, there are no published human trials of it, and a 2024 study found the fragment alone did not raise wound-healing activity in a dish while one of its breakdown products did.
This page is about that research and the batch you are getting. TB-500 is not an approved medicine and is not for people or animals to take.
The research
What the published studies found.
The stretch of the 43-amino-acid thymosin beta-4 protein that this fragment matches. That short region is the part that grips actin.
Van Troys et al., EMBO J, 1996When the parent protein, thymosin beta-4, was first fully sequenced. Nearly all study since has been in cell and animal models.
Low et al., PNAS, 1981Figures outside lot paperwork describe third-party research records for the molecule. They are not Form Labs product results or use claims.
Read the full research guideIdentity, papers, and research-use boundariesMechanism notes
Plain-language research labels.
Three things worth understanding: what it grips, why that could bear on repair, and how thin the direct evidence actually is. This is what the studies looked at, largely in dishes and rodents - not a description of what this vial does.
The actin-binding part
Actin is what a cell builds its internal scaffolding from, and taking that scaffolding apart and putting it back together is how a cell changes shape and moves. TB-500 copies the stretch of thymosin beta-4 that grips actin - written LKKTET. That grip is the mechanism everything else on this page hangs off.
Why that bears on repair
A wound closes partly because cells crawl into the gap and rebuild it. The idea under test is that making the scaffolding easier to rearrange helps them crawl. Studies also looked at whether fresh blood vessels follow them in. All of it in dishes and in rodents.
What the direct evidence covers
Thymosin beta-4 itself reached early human trials. This seven-amino-acid fragment has not - its record is cell and animal work, and a 2024 study found the fragment alone did not raise wound-healing activity in a dish, while one of its breakdown products did. That is the honest state of the evidence.
Order anchor
Form Laboratories
TB-500 with live bundle pricing.
- Independently tested for purity and identity, with the result printed on the lab report
- A batch number on every vial that matches its lab report, so you can always check the two line up
- Ships from Perth via Australia Post in plain, unbranded packaging, with tracking emailed
- 30-day purity guarantee: if an independent re-test comes back below the purity on the report, we refund the order in full
Base tier
$109.00 AUD
Single vial / 10 mg / $109.00 AUD per vial
Ships after order review. Reference material for research use only.
Testing documentation
Lot-level records
Australia-wide dispatch
Plain, tracked delivery
Plain fulfilment
Discreet outer packaging
Research use only
No human-use claims
COA proof
Batch paperwork before checkout.
98.3%
Measured purity is matched to the product record and batch paperwork.
Purity test (HPLC) at or above 98%Identity confirmedScreened for bacterial residue (endotoxin)
Certificate of AnalysisTB5-2506
CompoundTB-500
LotTB5-2506
Purity98.3%
Net peptide10 mg
AppearanceFreeze-dried reference material
ReleasedCurrent product record
Download COA summary
Build your stack
Study alongside other catalogue references.
These products are shown as catalogue pairings only. Add any line to the same cart for order review.
15-amino-acid research peptide
BPC-157
$99 AUD
Researchers can study this catalogue reference alongside TB-500 in the same order record.
Two-peptide research set
BPC-157 & TB-500
$119 AUD
Researchers can study this catalogue reference alongside TB-500 in the same order record.
Naturally occurring copper peptide
GHK-Cu
$79 AUD
Researchers can study this catalogue reference alongside TB-500 in the same order record.
FAQ
Questions, answered plainly.
TB-500 is supplied as laboratory research material only. It is 21+ only, not for human consumption, and not for veterinary use.
Yes. The product page lists lot, identity, purity, appearance, release status, and storage notes for TB-500.
Follow the label and matching COA paperwork. This page repeats 2-8 C storage guidance and light-protection notes before checkout.
TB-500 is a synthetic seven-amino-acid peptide, Ac-LKKTETQ, that copies the actin-binding part of the protein thymosin beta-4 (residues 17-23 of the 43-amino-acid protein). It is studied, mostly in cell and animal models, for tissue repair and cell movement. The spec sheet lists it as a freeze-dried research reference in a 5 mg vial. It is not an approved medicine, and Form Labs supplies it for laboratory research only.
No. Thymosin beta-4 is a full 43-amino-acid protein, while TB-500 is just seven of those amino acids from the actin-binding region. Much of the well-known research is on the whole protein, so it should not be read as direct evidence for the fragment. The spec sheet keeps this distinction explicit, listing TB-500 as the fragment and not the parent protein.
The current batch is lot TB5-2506, supplied as a 5 mg freeze-dried vial at 98.3% purity. The spec sheet and COA both list storage at 2-8 C, dry and protected from light. Because the direct TB-500 literature does not settle on one standard identifier, CAS and formula are confirmed against the lab report for lot TB5-2506. These are batch and handling details, not use instructions.
No. Thymosin beta-4 is a natural protein made of 43 amino acids. TB-500 is just a seven-amino-acid piece of it - the actin-binding region (residues 17-23), written Ac-LKKTETQ. Most of the well-known research is on the full thymosin beta-4 protein, so those findings shouldn't be read as direct evidence for the shorter TB-500 fragment.
In published research, TB-500 - and, more often, its parent protein thymosin beta-4 - is studied for the part it plays in cell movement, wound repair and the growth of new blood vessels. That work is almost all in cell cultures and animals. These are research questions, not effects the product is claimed to have in people.
Start with the most recent direct test, because it is the least flattering: a 2024 study found the fragment itself did not raise wound-healing activity in a dish - a breakdown product did. Beyond that, most of the well-known findings are on the full thymosin beta-4 protein, not the TB-500 fragment. Direct fragment studies are thin: Philp and colleagues (Wound Repair and Regeneration, 2003) tested a similar short fragment in mice, while Esposito and colleagues (Drug Testing and Analysis, 2012) characterised the Ac-LKKTETQ fragment analytically.
There are no published human trials of the TB-500 fragment. One early-phase safety study (ClinicalTrials.gov NCT07487363) is recruiting, but has reported no results. Some early human trials exist for the full thymosin beta-4 protein, but not for the fragment sold as TB-500, and none led to an approved medicine.
TB-500 and BPC-157 are unrelated compounds that both appear in tissue-repair research. TB-500 is a 7-amino-acid fragment (Ac-LKKTETQ) of the protein thymosin beta-4, studied mostly for cell movement and repair. BPC-157 is a 15-amino-acid peptide (GEPPPGKPADDAGLV) based on a protein in gastric juice, studied mostly in gut, tendon and blood-vessel models. Both are preclinical, and there's no research on combining them.
TB-500 is not an approved medicine in Australia - it is not on the Australian Register of Therapeutic Goods, and the TGA has not evaluated it for safety, quality or effectiveness. Form Labs supplies TB-500 strictly as a laboratory research material, not for human or veterinary use. In sport, TB-500 is on the World Anti-Doping Agency prohibited list.
No. TB-500 has not been approved as a medicine by any regulator - not the TGA in Australia, the FDA in the United States, or the EMA in Europe - for any use. TB-500 remains an investigational research compound, and Form Labs sells it only as reference material for laboratory research.
TB-500 has the sequence Ac-LKKTETQ - seven amino acids with an acetyl cap on one end. It corresponds to residues 17-23 of the 43-amino-acid protein thymosin beta-4, the region that binds actin. Because published sources don't settle on one standard identifier for the fragment, each batch's identity is confirmed on its lab report; the sequence is the reliable anchor.
The published research on the TB-500 fragment defines it clearly by sequence (Ac-LKKTETQ) but doesn't settle on a single standard CAS number for it. Rather than list an identifier that might not match the supplied form, Form Labs confirms TB-500's identity on the batch lab report instead. The sequence is the reliable anchor.
This batch of TB-500 is listed at 98.3% purity. Every batch is tested by an independent laboratory: a purity test (HPLC) measures how much of the powder is the intended compound, an identity test confirms it's the right one, and it's screened for bacterial residue (endotoxin). The result is printed on the lab report tied to your vial's batch number.
The research-peptide market is largely unregulated, and independent analyses have repeatedly found products that are under-strength, mislabelled or contaminated. That's why every Form Labs batch of TB-500 ships with an independent lab report confirming its purity and identity, and why we back it with a 30-day purity guarantee. It's also why TB-500 should be handled only as a research material.
TB-500 ships from Perth via Australia Post in plain, unbranded packaging once your payment clears, with tracking emailed. On arrival, store the freeze-dried vial in the fridge at 2-8 C and keep it out of light. Delivery is Australia-only; a flat rate applies, with free standard shipping on orders over $250.
Add the size and quantity of TB-500 you want to your cart and check out. Instead of paying by card, you'll receive an emailed invoice with our bank details - pay by bank transfer, quoting the reference. Once the payment clears we pack and send your order, and email you tracking. A faster transfer (PayID or Osko) gets things moving sooner.
Every Form Labs compound, TB-500 included, carries a 30-day purity guarantee. If an independent lab re-tests the batch within 30 days and it comes back below the purity stated on its lab report, we refund the order in full - and you don't need to send the vial back.
No. TB-500 from Form Labs is supplied strictly as reference material for laboratory research - not a medicine, supplement or food, and not for people or animals to take, and 21+ only. The research described on this page concerns the TB-500 molecule (and the thymosin beta-4 protein behind it) in published studies, not a Form Labs product.
Form your biology
TB-500, with the batch details visible.
Before you order, check the batch number shown on the page against the lab report for that batch.
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