KLOW vs TB-500
KLOW and TB-500 are both studied in recovery research, but they are different classes of compound with different reported research applications.
✓ both US-made · third-party tested · batch COA on every order
Last updated August 25, 2026
How do KLOW and TB-500 differ?
KLOW (Four-peptide research blend · cellular research) is catalogued under recovery & gut research; TB-500 (Thymosin β4 fragment · tissue-repair research) is catalogued under recovery & gut research. Verve lists 4 reported research applications for KLOW and 4 for TB-500. Both are made in the United States, screened by HPLC to a 99%+ purity standard, and shipped with a batch-level certificate of analysis.
| field | KLOW | TB-500 |
|---|---|---|
| compound class | Four-peptide research blend · cellular research | Thymosin β4 fragment · tissue-repair research |
| research area | recovery & gut | recovery & gut |
| reported research applications | 4 listed | 4 listed |
| supplied as | co-formulated blend | single compound |
| catalog sizes | 80mg · 160mg | 10mg |
| purity standard | 99%+ by HPLC | 99%+ by HPLC |
| manufactured | United States | United States |
| batch COA | published per lot | published per lot |
| endotoxin-tested option | available | available |
| co-formulated together in | not co-formulated | not co-formulated |
| price from | $185.99 | $93.49 |
| availability | in stock | in stock |
Prices and stock read live from the catalog. Both compounds are supplied strictly as reference materials for in-vitro laboratory research.
What is KLOW and what is TB-500?
KLOW is classified as Four-peptide research blend · cellular research; TB-500 as Thymosin β4 fragment · tissue-repair research. Both profiles below cover scientific identity only — what the molecule is and which laboratory models it appears in. Verve supplies both strictly as in-vitro reference materials, and neither profile describes human or veterinary use.
KLOW
Four-peptide research blend · cellular research
KLOW is a research blend that combines four of the most-studied peptides (BPC-157, TB-500, GHK-Cu, and KPV) in a single vial. Verve supplies it as a high-purity, batch-tested research preparation for cellular research.
full KLOW profile →TB-500
Thymosin β4 fragment · tissue-repair research
TB-500 is a synthetic 43-amino-acid peptide corresponding to an active fragment of thymosin beta-4, a naturally-occurring actin-binding protein. Verve supplies it as a high-purity research compound for tissue-repair and cellular research.
full TB-500 profile →Which research models is each compound studied in?
KLOW and TB-500 both sit inside recovery & gut research, so their listed models share framing while differing in specifics. The table lists 4 reported research applications for KLOW and 4 for TB-500. Rows are per compound, not equivalences.
| KLOW — reported research applications | TB-500 — reported research applications |
|---|---|
| Multi-compound cellular research | Cell-migration research models |
| Tissue-repair research models | Actin-regulation and cytoskeletal research |
| Extracellular-matrix and remodeling research | Angiogenesis research |
| Comparative peptide research | Tissue-repair research models |
Research contexts only. Both compounds are supplied for laboratory research use only, and no entry above describes an effect in humans or animals.
What sizes and prices does verve list for KLOW and TB-500?
KLOW is listed from $185.99 and TB-500 from $93.49. The table below is every catalog size verve currently lists for the two compounds, at single-vial prices before the automatic multi-compound discount. Sizes describe the vial format supplied to the laboratory, nothing more.
| compound | size listed | price | availability |
|---|---|---|---|
| KLOW | 80mg | $185.99 | in stock |
| KLOW | 160mg | $314.49 | in stock |
| TB-500 | 10mg | $93.49 | in stock |
Any 2 different compounds take 20% off, any 3 take 30% — applied automatically in the cart, no code. Orders placed Monday–Friday ship by 2pm CT, free over $100.
shop the compounds →Frequently asked questions about KLOW and TB-500
What is KLOW?
KLOW is a research blend of four peptides (BPC-157, TB-500, GHK-Cu, and KPV) in one vial. Verve supplies it as a research compound for laboratory use only, not for human or veterinary use.
What is KLOW studied for in research?
It is used in multi-compound cellular and tissue-repair research models where these four peptides are studied together. Verve makes no health claims.
What is TB-500?
TB-500 is a synthetic 43-amino-acid peptide based on an active fragment of thymosin beta-4. Verve supplies it as a research compound for laboratory use only.
What is TB-500 studied for in research?
It is used in cell-migration, actin-regulation, angiogenesis, and tissue-repair research models. It is not for human or veterinary use.
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verve products are sold for laboratory research and development purposes only and are not intended for human or veterinary use of any kind. statements on this site have not been evaluated by the FDA.