Lin-Zhi International

Lin-Zhi International is a diagnostic company specializing in the development and manufacture of rapid, high-quality enzyme immunoassay (EIA) test kits for drugs of abuse testing and therapeutic drug monitoring. Founded in 1994 and headquartered in Santa Clara, California, the company provides a wide range of assays compatible with various automated clinical chemistry analyzers. Their product portfolio includes tests for traditional drugs such as opioids and stimulants, as well as specialized analytes like fentanyl, synthetic cannabinoids, and various prescription medications. Lin-Zhi International serves clinical laboratories, forensic toxicology labs, and workplace testing facilities globally, maintaining ISO 13485 certification for its manufacturing processes.