Volumes tested
Certificate of Analysis
TB-500
Batch A1226 · Tested May 29, 2026
✓ Third-party lab tested
Independent laboratory testing confirms purity and composition of this batch.
Sample Summary
Identification and intake details for this tested batch.
Product
TB-500
Volume
5mg
Batch / Lot
A1226
Accession #
2605290388
Test Date
May 29, 2026
Appearance
White Lyophilized Powder
Identity
Confirmed via LC-MS
Purity Analysis
HPLC with UV detection coupled with mass spectrometry (LC-MS)
Purity (HPLC-UV)
99.28%
Identity (LC-MS)
Thymosin Beta-4
Net Peptide Content
6.15 mg
Test Method
HPLC with UV detection coupled with mass spectrometry (LC-MS)
What this test measures
High-performance liquid chromatography with UV detection separates the peptide from related impurities and quantifies each fraction. Mass spectrometry confirms molecular identity by measuring the exact mass-to-charge ratio.
Endotoxin
USP <85>
Result
Cleared
Sensitivity
≤0.05 EU/mL
FD
Freedom Diagnostics
Full Certificate PDF
Signed laboratory-issued PDF with chromatogram and mass confirmation plots.
Test History for TB-500
14 independent lab tests on file for this product.
99.53%
Avg purity · 14 batches
99.11% – 99.88%
Range
4 on file
Endotoxin tests
99.11%
Batch A2926031
· 5mg
Aug 6, 2026 · Purity
99.25%
Batch A2926032
· 10mg
Aug 5, 2026 · Purity
99.51%
Batch B2826032
· 10mg
Jul 22, 2026 · Purity
99.42%
Batch I2326032
· 10mg
Jul 8, 2026 · Purity + Endotoxin
99.25%
Batch A1226
· 10mg
Jul 6, 2026 · Purity
99.62%
Batch D1526032
· 10mg
Jun 24, 2026 · Purity + Endotoxin
99.88%
Batch B2026031
· 5mg
Jun 17, 2026 · Purity
99.87%
Batch B2026032
· 10mg
May 29, 2026 · Purity + Endotoxin
99.28%
Batch A1226
· 5mg
May 29, 2026 · Purity + Endotoxin
99.83%
Batch B0526
· 10mg
Mar 27, 2026 · Purity
99.83%
Batch B0526
· 5mg
Mar 17, 2026 · Purity
99.69%
Batch 32CBF
· 10mg
Feb 26, 2026 · Purity
99.74%
Batch B0526
· 5mg
Feb 20, 2026 · Purity
99.13%
Batch 32ABF
· 10mg
Jan 22, 2026 · Purity
Frequently Asked Questions
Quick references for what each test means.
What is HPLC-UV purity testing?
High-Performance Liquid Chromatography separates the peptide from related impurities based on how strongly each molecule interacts with a chromatographic column. A UV detector quantifies each separated fraction, and the total peptide peak area divided by all peaks yields the purity percentage.
What does LC-MS confirm?
Liquid Chromatography with Mass Spectrometry confirms the molecular identity of the peptide by measuring its exact mass-to-charge ratio. This verifies the peptide is what it claims to be, not a related molecule with a similar chromatographic profile.
Are all my orders from this exact batch?
Not necessarily. Batches are rotated as inventory moves. Check the batch code on your vial against the test history above to find the matching certificate. Every batch we sell has been independently tested.
Research Use Only
The peptides tested are intended for research use only and are not approved for human or veterinary use, diagnostic, therapeutic, or clinical applications. Results apply only to the specific sample provided and should be interpreted by qualified professionals within the scope of the intended research.
