TB-500 (TB4)

Buy TB-500 (TB4) in 10mg research vials

When you buy TB-500 from Peptide Partners, you receive a lyophilized research peptide in sealed 10mg vials, packed in sets of 2, 5 or 10 for totals of 20mg, 50mg or 100mg. Each vial is filled as freeze-dried powder, labelled with its batch and documented by independent testing.

What is TB-500, the thymosin beta-4 fragment?

TB-500 is a synthetic peptide modelled on thymosin beta-4 (TB4), a 43-amino-acid protein present in most animal cells and best known in the literature for binding G-actin, the monomer form of the actin cytoskeleton. It is the most abundant member of the beta-thymosin family, a group of small proteins that regulate actin inside the cell. The TB-500 name, together with spellings such as TB500 and TB4 frag 500, is used for research material built around the actin-binding region of that protein. Studies on thymosin beta-4 and its fragments have examined actin polymerisation, cell migration and angiogenesis signalling in cell and animal models. That work remains at the laboratory stage, and the peptide is supplied here for laboratory research only. Many study designs pair it with BPC-157, which is why the two are also sold together as BPC-157 and TB-500 combo vials.

TB-500 cost and pack options

• 2 vials × 10mg = 20mg pack
• 5 vials × 10mg = 50mg pack
• 10 vials × 10mg = 100mg pack

The price per mg drops on the 5- and 10-vial packs, and live pack prices are shown above. Smaller packs suit pilot work or a first comparison against BPC-157; the 10-vial pack keeps a longer series on one lot and one certificate, which simplifies record-keeping when results are compared later.

Where to purchase TB-500 with test records

If you buy TB-500 here, the lot in your pack has been through independent third-party testing, with endotoxin, heavy-metal and purity screening recorded as passed. The results sit in the specification table and the Certificates tab, each linked to a certificate record. Checkout takes CashApp, Apple Pay, Chime and cryptocurrency, and our accepted payment options page covers the details. Free-shipping eligibility is calculated in the cart, and an order can be cancelled for a full refund until dispatch; damaged or incorrect items can be reported with photos within 48 hours of delivery. TB-500 is one of many research peptides on this US storefront, so it can ship in the same order as related compounds.

TB-500 (TB4) FAQ

Is TB-500 the same as thymosin beta-4?

Not exactly. Thymosin beta-4 (TB4) is a 43-amino-acid protein found in most animal cells. TB-500 is the name used for synthetic research material based on its actin-binding region. Catalogues often use the two names side by side, which is why this listing carries both TB-500 and TB4.

What does TB4 frag 500 mean?

TB4 frag 500 is a common search variant for TB-500. It points to the peptide being a fragment-based analogue of thymosin beta-4 rather than the full protein. Searches for TB4-frag 500, TB500 and TB-500 all refer to the same research material offered on this page.

How much TB-500 comes in each pack?

Every vial holds 10mg of lyophilized TB-500. Packs contain 2, 5 or 10 vials, so an order totals 20mg, 50mg or 100mg. The price per mg is lower on the larger packs, and current prices for each option are displayed on the product page.

What testing has this TB-500 lot passed?

The current TB-500 lot is recorded as passing endotoxin, heavy-metal and purity screening performed by an independent third-party laboratory. The results appear in the specification table, and the complete certificate can be found in the Certificates tab or searched by batch ID in the store’s certificate ledger.

How do I purchase TB-500 from a US storefront?

Add the pack size you need to the cart and pay with CashApp, Apple Pay, Chime or cryptocurrency. Free-shipping eligibility is calculated in the cart. Orders can be cancelled for a full refund before they ship, and damaged or incorrect items are reported with photos within 48 hours of delivery.