For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

Independent test result

Thymosin Beta-4

by Ion Peptide· batch TB10-1125

98.50 %

measured purity· November 14, 2025

New to reading a COA? See how to read a peptide COA →

How this batch compares

This batch measured 98.50%, 0.99 pts below Ion Peptide's average of 99.49% for this peptide over 14 batches, and 0.83 pts below the all-vendor average of 99.34% across 172 COAs from 33 vendors.

74.5% 100.0%
This batch 98.50% Vendor avg (14 batches) 99.49% Peptide avg (172 COAs) 99.34%
Compare pricing

See Thymosin Beta-4 pricing across 33 verified vendors

Merit's price comparison page pulls current listings so you can cross-check purity history vendor by vendor before you buy.