- Reported purity
- 99.58%99.5%+
- Test date
- Jun 24, 2026
- Laboratory named
- Freedom Diagnostics
Lot details
ULP-49151
Loading peptide prices…
Loading peptide prices…
Compare observed vial prices, price per mg, and current indexed COA records across vendors.
Based on the certificates our crawler found; vendors may publish more than we index. Indexed documents do not establish product quality. Index as of Oct 2026.
Price-drop alert
Today’s lowest in-stock price is $3.50/mg. We check daily and email you once if it drops 10% or more. The alert ends after that, or after six months.
Some outbound vendor links are affiliate links. Commission status does not change the displayed prices, indexed COA fields, or certificate filters.
Observed market data
Based on the certificates our crawler found; vendors may publish more than we index.
Observed Thymosin Beta-4 listings span $32.50-$149.99 in total vial price, with a median of $5.90 per mg across 11 usable listings as of Oct 14, 2026. Compare Thymosin Beta-4 by vial size, total price, price per mg, stock signal, vendor coverage, and last-checked date. These market observations do not verify product quality or recommend a seller. Each vendor row shows its current COA record, including the reported purity, named lab, and printed test date.
Observed Thymosin Beta-4 listings span $32.50-$149.99 in total vial price, with a median of $5.90 per mg across 11 usable listings as of Oct 14, 2026.
The comparison covers observed vial prices, price per mg, vial sizes, stock signals, vendor coverage, and last-checked dates. It does not verify product quality or recommend a seller.
The index holds 19 public Thymosin Beta-4 certificates of analysis. We found certificates from some of the Thymosin Beta-4 vendors we track. Based on the certificates our crawler found; vendors may publish more than we index.
Choose “Highest COA purity” to sort vendors by the value printed on each current certificate. The number belongs to that document, lab, lot, and test date. It cannot establish product quality or safety, and values from different labs or methods are not directly comparable.
Product documentation
We found certificates from some of the Thymosin Beta-4 vendors we track. The public evidence set contains 19 documents naming 4 laboratories. Reported test dates in this set run from Jun 16, 2025 through Jun 24, 2026.
Based on the certificates our crawler found; vendors may publish more than we index.
5 current records
ULP-49151
1245
SPECTB101
BPT203501014
20251009003
| Printed lab | Certificate | |||
|---|---|---|---|---|
| Umbrella Labs | Freedom Diagnostics | Jun 24, 2026 | 99.58%99.5%+ | View COA |
| solyn | Vanguard Laboratory | Jun 22, 2026 | 99.8%99.5%+ | View COA |
| Pure Peptides | MZ Biolabs | Jul 15, 2025 | 99.36%99.0–99.49% | View COA |
| Genesis Peptides | MZ Biolabs | Jun 16, 2025 | 99.62%99.5%+ | View COA |
| Peptide Works | Peptide Works | Not reported | 99.2%99.0–99.49% | View COA |
A record appears on file after our pipeline identifies the document as a certificate of analysis and matches its printed compound to a catalog peptide. The record cannot prove authenticity, chain of custody, sterility, product safety, or suitability for use.
Lab, lot, date, compound, and purity fields are transcribed from the document and can contain extraction errors. “Older record” means the reported test date is more than 18 months old.
Learn how to read a peptide COA or review the testing methodology and dataset.
The clinic network
Request a free connection to a peptide clinic, by telehealth or in person. A licensed clinician decides whether any treatment is right for you. What peptide therapy involves