(408) 747-0185


Since our inception in January of 2006, Assay Biotechnology has been a worldwide contributor of industry-leading antibody production and engineering and assay technologies, fluorescent dyes, quenchers, recombinant proteins and synthetic peptides. Located in the heart of California’s San Francisco Bay Area, we have strived to answer the global need for high quality assay kits and immunological reagents used in pharmaceutical and academic research that predominantly formulate the basis of healthcare.

For the first couple years after our founding, Assay Biotech established itself as an antibody manufacturer and antibody engineering, catering specifically to large corporations through OEM partnerships. Since then, we have been emerging as a prominent assay and antibody source, expanding our reach to millions of researchers in over 50 countries around the world.

We are always looking to push the envelope of our potential, determined to become one of the world’s leading assay development and manufacturing companies, providing a multitude of ready-to-use assays, immunological reagents, molecular detection modules, biomarkers and full line antibody engineering services to support the most arduous academic, pharmaceutical and clinical research endeavors.

Contact us


United States 47787 Fremont Blvd.

Fremont, CA 94538

United States of America


Orders: (408) 747-0185

Orders Toll-Free in USA: (877) 883-7988

HR: (408) 744-1826


Main: (408) 747-0145

Toll-Free in USA: (877) 610-9758

Email Us

Orders: order@assaybiotech.com

Tech Support: tech@assaybiotech.com

HR: hr@assaybiotech.com

Business Hours

Monday – Friday (Except Holidays)

8:30am – 5:00pm Pacific Standard Time (PST)

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