- Size
- 20 mg
- Vendor score
- 76
- Lab tests
- 6
- Price
- $78
$3.90/mgvendor page ↗
Peptides / TB-500 (Thymosin Beta-4)
TB-500 (Thymosin Beta-4)
6 listings from 4 vendors, from $3.9/mg. 5 of 16 independent lab tests passed.
TB-500 (Thymosin Beta-4) is sold for research in many vial sizes and pack counts, so the listings below are ranked by US dollars per milligram rather than sticker price. A low price per mg says nothing about what is in the vial: the lab column shows whether each vendor has passed an independent test, and the methodology explains what a pass means. For research use only; not medical advice.
Lab results by vendor (11)
| Vendor | Passed | Failed | Tests | Latest |
|---|---|---|---|---|
| Ningbo Shuyou Plasticization | 2 | 0 | 2 | 2026-08-05 |
| FSD | 1 | 0 | 2 | 2026-08-06 |
| Bulk Peptide Supply | 1 | 0 | 1 | 2026-06-24 |
| NuLife Peptides | 1 | 0 | 1 | 2026-05-06 |
| Bionexis Peptides | 0 | 2 | 2 | 2026-09-04 |
| Cocer Peptides | 0 | 2 | 2 | 2026-03-12 |
| Orbitrex Peptides | 0 | 2 | 2 | 2026-09-24 |
| Guangzhou Lengiuanhuang Cosmetics | 0 | 1 | 1 | 2026-07-13 |
| Heman Peptide HM | 0 | 1 | 1 | 2026-09-17 |
| Peptide Crafters | 0 | 1 | 1 | 2026-09-04 |
| Wuhan Wansheng Biotechnology | 0 | 1 | 1 | 2026-09-18 |
6 listings
- Size
- 25 mg
- Vendor score
- 76
- Lab tests
- 6
- Price
- $140
$5.60/mgvendor page ↗
- Size
- 10 mg
- Vendor score
- 79
- Lab tests
- 6
- Price
- $59
$5.90/mgvendor page ↗
- Size
- 10 mg
- Vendor score
- 80
- Lab tests
- 2
- Price
- $59.99
$6.00/mgvendor page ↗
- Size
- 10 mg
- Vendor score
- 78
- Lab tests
- 4
- Price
- $65
$6.50/mgvendor page ↗
TB-500 (Thymosin Beta-4) 5MGModern Aminos · out of stock
- Size
- 5 mg
- Vendor score
- 79
- Lab tests
- 6
- Price
- $34
$6.80/mgvendor page ↗
TB-500 (Thymosin Beta-4): quick answers
What is the cheapest TB-500 (Thymosin Beta-4) per mg?
Core Peptides, at $3.90/mg: $78 for 20 mg as of 2026-10-19. Prices are the vendor’s own, converted to USD.
Which TB-500 (Thymosin Beta-4) vendors passed an independent lab test?
4 of 11 tested vendors passed at least one test: Ningbo Shuyou Plasticization, FSD, Bulk Peptide Supply, NuLife Peptides.
How many vendors sell TB-500 (Thymosin Beta-4)?
4 vendors, with 6 listings between them as of 2026-10-19.
Where do the lab results and vendor scores come from?
From Finnrick's independent lab testing; this site is not affiliated with Finnrick or any vendor. The methodology page explains the score, what “passed” means and how price per mg is worked out.