For laboratory research use only. Not for human consumption. All compounds referenced in this article are sold by Explicit SARMs solely as reference materials for in-vitro and animal research by qualified professionals. Nothing here is medical advice, and no statement has been evaluated by the FDA. These materials are not intended to diagnose, treat, cure or prevent any disease.
Sourcing research peptides is mostly an exercise in documentation. Two vials can carry the same name and contain very different material, and a study is only as good as what went into it. This checklist covers what to confirm before BPC-157 or TB-500 reaches the bench.
1. Confirm exactly which molecule you are buying
BPC-157 is a synthetic 15-amino-acid peptide whose sequence is a partial fragment of a protein originally isolated from gastric juice, often called “body protection compound.” TB-500 is a synthetic peptide based on the actin-binding region of thymosin beta-4, a naturally occurring 43-amino-acid protein that regulates actin, the main structural protein of the cell cytoskeleton. Catalogs often treat TB-500 and thymosin beta-4 as interchangeable. They are not, so check that the product name, the sequence information and the COA all describe the same thing.
2. Read the certificate of analysis
A useful COA names the compound, the lot number, the test methods used (typically HPLC for purity and mass spectrometry for identity) and the test date. The lot number on the COA should match the lot on your vial. A certificate of analysis is available on request through our contact page, and our products are tested by Accumark. Our guide to reading a COA explains what each section of the report should contain.
3. Decide between single peptides and a blend
Single-peptide vials such as BPC-157 5mg and TB-500 5mg keep the two compounds separate, which makes single-agent controls and lot tracking simple. The BPC-157 / TB-500 Blend 10mg (5 mg of each) and BPC-157 / TB-500 Blend 20mg (10 mg of each) fix the ratio at 1:1. That is convenient when it is exactly what the protocol needs, but limiting when it is not. For a blend, the COA should identify both peptides. Our blend FAQ covers the fixed-ratio products in more detail.
4. Check the format and packaging
Lyophilized powder in a sealed vial is the standard format for peptides. Look for intact seals, clear labeling with the compound name, amount and lot, and packaging that protects against moisture and light. Capsule formats such as BPC-157 / TB-500 Capsules suit workflows built on fixed units.
5. Be wary of price alone
Unusually low prices often reflect missing testing or unclear sourcing. Compare cost per milligram of verified material, not price per vial. Our guide to what drives BPC-157 pricing explains more.
6. Keep records
Record the supplier, product, lot number, COA, date received and storage conditions for every vial. That record makes results traceable and reproducible.
Frequently Asked Questions
Is BPC-157 or TB-500 approved for human use?
No. Neither is approved by the FDA or any other regulator for any indication. BPC-157 appears on the World Anti-Doping Agency’s prohibited list under S0 (non-approved substances). TB-500 and thymosin beta-4 appear on the World Anti-Doping Agency’s prohibited list under S2 (peptide hormones, growth factors, related substances and mimetics). Both are sold strictly for laboratory research, and we do not provide dosing, administration or usage guidance.
Can I get a COA before ordering?
Yes. Contact us through our contact page with the product you are interested in.