Lab testing & certificates of analysis

Third-party independent testing is our standard — not an exception. Every batch of Jintropin we stock is tested by an independent analytical laboratory before it enters our inventory. Certificates of analysis are available for every batch, confirming somatropin identity, concentration, and the absence of contaminants.

What our COAs confirm

• Somatropin identity: HPLC analysis confirming the 191 amino acid sequence
• Potency: IU concentration per vial matching stated specification
• Purity: Absence of misfolded protein, aggregates, or degradation products
• Sterility markers: Endotoxin levels within acceptable research-grade limits

How to request a COA

After placing an order, contact us at contact@jintropinofficial.com with your order reference number. We will provide the COA for the specific batch included in your order within 24 hours.

GeneScience scratch-code verification

In addition to our third-party COAs, every Jintropin unit carries GeneScience’s own scratch-code authentication. See our complete verification guide for step-by-step instructions on checking your scratch-code against the official GeneScience portal.