Diagnostic Biosystems 1020 Serpentine Ln, Pleasanton, CA94566 Diagnostic Biosystems is a medical manufacturing company with its main corporate office in Pleasanton. Founded in 1994…More by Dr. Bipin Gupta, Diagnostic BioSystems is committed to improving immunohistochemistry and focuses on improving reagents for IHC staining. DBS offers a complete selection of concentrated and prediluted ready-to-use antibodies as well as detection systems, ancillary reagents, control slides, special stains and FITC conjugates. Diagnostic Biosystems is a registered medical device manufacturer, operating under Food and Drug Administration system regulations. You can also check out the company's catalog on the main part of the website. Call 925-484-3350 for more information or to schedule an appointment.