Chang Jen Yan

QPS Holdings LLC provides testing services to support preclinical and clinical research and development. It services include assay finder, bioanalysis, dermal and transdermal, neuropharmacology, and toxicology. The company was founded by Benjamin M. Chien in 1995 and is headquartered in Newark, DE.

QPS LLC is a minority-owned business which provides contract research services in the United States and Taiwan. Its services include bioanalysis, hybridization, drug metabolism & pharmacokinetics, and biomarkers. QPS was founded in 1995 by Benjamin Chien and is headquartered in Newark, DE

Part of HSBC Holdings Plc, QPS MRA is a company that provides testing services to support preclinical and clinical research and development. The company is based in Miami, FL.

QPS Bioserve India Pvt Ltd. provides bioanalytical research services. The company was founded on December 20, 2004 and is headquartered in Hyderabad, India.

Quest Pharmaceutical Services is a clinical research company based in Taipei, Taiwan. Part of HSBC Holdings Plc, Quest Pharmaceutical Services provides clinical research services. The CEO of the Taiwanese company is Vincent Yen.

Part of HSBC Holdings Plc, Qualitix Clinical Research Co., Ltd. is a Taiwanese company that provides clinical research services. The company is based in Taipei, Taiwan. Qualitix Clinical Research Co. was acquired by Quest Pharmaceutical Services /Taiwan/ from Genovate Biotechnology Co., Ltd. on March 08, 2011.