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About CTK Biotech

Simplifying diagnostics. Improving global health.


Located in San Diego County, California, an area well known for biotechnology and scientific discovery, CTK Biotech develops and manufactures innovative immunodiagnostic tools and point of care diagnostic test kits for the IVD community worldwide. Our IVD products allow medical professionals to quickly and accurately diagnose disease and meet patient needs. The simplicity and portability of our test kits make them ideally suited for use in a wide range of settings including remote locations and countries with large populations where complicated medical diagnostics are not readily available.

CTK Biotech is focused on quality and strives to stay ahead of changing market conditions.  With top-notch experts at the helm, we identify and adopt new technologies, plan for upcoming trends and achieve commercialization as a result of our advances.  CTK invests heavily in research to develop new products in response to market demands and continuously improve our point of care tests.  For each step of product development, we have established a proficient pathway to convert scientific discoveries and the latest technologies into diagnostic solutions for use in the real world.

We have a unique business model in that we produce our own recombinant antigens and antibodies for later use in the production of our test kits. Our skills in raw material identification, generation, and purification give us an edge over our competitors as we can guarantee excellent control over the quality, supply, and consistency between batches to ensure that our customers receive the highest quality products at exceptional pricing.

Customer service is an equally important factor for our business.  We strive to obtain and retain our loyal customers by exceeding their expectations with unparalleled service and creating sustainable value.  From navigating the regulatory environment to regular communication from the time of order to delivery, CTK is known for excellence in quality and service.

In September 2020, CTK Biotech Inc (CTK), together with Beijing Genese Biotech, Inc. (BGB), joined the SSI Diagnostica Group with offices and production in Denmark. Today CTK and BGB are wholly-owned affiliates of SSI Diagnostica A/S Group. The Group CEO is based out of Hilleroed, Denmark.

Our R&D and technical personnel keep business cooperation all year round and keep pace with international diagnostic technology. Our company’s quality system meets the requirements of American cGMP, and the products developed and produced by our company have been successfully approved by WHO.