About Us

BioCheck, Inc., organizational chart

Biocheck's headquarters, in South San Francisco BioCheck, Inc., located in South San Francisco, California, USA, was founded in April 1997. We design, develop, and manufacture high-quality In vitro diagnostic immunoassay devices for the worldwide biomedical, pharmaceutical, and scientific research markets. Product categories include Tumor Markers, Cardiac Markers, Steroids, TORCH, Infectious Diseases, Thyroids, and Fertility. BioCheck also offers antibody purification and conjugation services.

In August 2021, BioCheck acquired DRG International, with offices in the USA, Germany, Russia, Poland, and Czech Republic. BioCheck is an ISO 13485:2016 certified and U.S. FDA 21 CFR Part 820 compliant company that provides quality products and is committed to best-in-class customer care. Together with the DRG subsidiaries, we have the capacity to quickly provide reliable and sensitive products to our customers and distribute our products across the globe. Our goal is to provide timely information so treatment can be implemented earlier and effectiveness can be analyzed sooner, to better the long-term outcomes and improve lives.

Roy Paxton Yih, CEO

Roy Paxton Yih

Roy Paxton Yih oversees the global enterprise and looks to grow the business, optimize operations, and improve patient care. The intention to improve patient care comes from decentralizing diagnostic healthcare testing to increase access to patients around the world. These rapid diagnostic tests will provide valuable data or information to the patients’ health care team with regards to next steps in treatment options.

Mr. Yih brings more than 30 years of successful leadership in his previous company, Biocare Medical LLC – an IHC company of innovated reagent chemistries and instrumentation, delivered to hospitals, pharmaceutical companies, reference labs and research institutions around the globe. Biocare is recognized as a provider of the highest quality IHC products that give accurate timely results specifically in the area of cancer diagnostics.

Mr. Yih holds a Bachelor of Science degree in Biochemistry from U.C. Davis and a Master of Business Administration from Santa Clara University.

Leadership at BioCheck, Inc., Subsidiaries

Jörg Schlösser
General Manager, DRG Instruments GmbH

Joerg Schloesser

Jörg Schlösser is the General Manager for DRG Instruments GmbH, a wholly owned subsidiary of BioCheck, Inc. Founded in 1973 as a subsidiary of DRG International, Inc., and located in Marburg, Germany, DRG Instruments GmbH specializes in the development and production of innovative ELISAs and Chemiluminescent assays, both for routine and research applications, in the fields of diabetes diagnosis, endocrinology, prenatal/neonatal supervision, thyroid function and many more.

Jörg joined DRG Instruments GmbH as General Manager in April 2022. He brings more than 25 years of extensive experience in general management, sales, market development and operations in the field of medical devices across Europe, Russia and EMEA regions. Prior to joining BioCheck/DRG, he served initially as the Sales and Marketing Director at RADIM Diagnostics, and was then appointed as the General Manager/Managing Director for the business for the past four years.

Jörg received his master’s degree in Electro Engineering and Biomedical Engineering, and is also certified in Six Sigma Green Belt. Jörg and his wife Stefanie have two daughters. In his spare time, he enjoys downhill skiing in the wintertime and bike riding in the summer.