Certificate of Analysis · TB-500 · Certificate reference 030371
COA # COA-2026-955274 · certificate reference 030371 (printed on the certificate as Lot Number).
Independent third-party testing by ILS Laboratories, San Diego, CA, on one certificate covering purity, identity, endotoxin and sterility. The certificate links to the laboratory's verification portal.
Product: TB-500 · 10 mg
Laboratory: ILS Laboratories, 8222 Vickers St Suite 106, San Diego CA 92111
Laboratory accreditation: ISO/IEC 17025 (as stated on the certificate)
The laboratory's portal shows this certificate at its verify link; the access code is printed on the certificate.
Certificate of analysis — full panel (RP-HPLC at 214 nm; identity by HPLC retention time vs. reference standard)
Report COA-2026-955274Tested 8/7/2026
- Purity · RP-HPLC at 214 nm
- 99.70% (laboratory specification ≥95.0%)
- Identity · HPLC retention time vs. reference standard
- TB-4 (thymosin beta-4, supplied as TB-500), Confirmed
- Labelled content
- 10 mg
- Assayed content
- 10.6 mg (laboratory specification Report Only)
- On the assayed figure
- Reported as Net Peptide Content against a Report Only specification; the certificate sets no acceptance range.
- Fill volume
- 3 mL
- Appearance
- Good
- Sample matrix
- Lyophilized
- Date received
- 07/16/2026
- Heavy metals — Arsenic (As) · ICP-MS
- 0.0289 (laboratory specification NMT 1.5 ppm) (PASS)
- Heavy metals — Cadmium (Cd) · ICP-MS
- 0.0142 (laboratory specification NMT 0.5 ppm) (PASS)
- Heavy metals — Lead (Pb) · ICP-MS
- 0.0278 (laboratory specification NMT 1.0 ppm) (PASS)
- Heavy metals — Mercury (Hg) · ICP-MS
- 0.0472 (laboratory specification NMT 1.5 ppm) (PASS)
- Heavy metals — Chromium (Cr) · ICP-MS
- 0.0184 (laboratory specification NMT 10.0 ppm) (PASS)
- On the heavy-metals figures
- Elemental impurities analyzed by ICP-MS per USP <233> methodology. Acceptance criteria are internal laboratory quality screening limits for research-use materials and do not represent evaluation against any specific pharmacopeial monograph or product specification.
Verify this certificate with the laboratory at portal.ils-lab.com using access code VMMJNJP3. That confirms the document is genuine and was issued by them. It confirms the certificate, not your individual vial.
The laboratory’s PDF of report COA-2026-955274
Endotoxin and sterility, on the same certificate
Endotoxin (USP <85>): 0.101 EU/mL (Reported)Sterility (PCR): No Growth (PASS)
About the laboratories: who tests our lots, the methods each uses and how to verify a certificate.
For Research Use Only. Not for human consumption.