Fluorescence Immunoassay (FIA)

Fluorescence immunoassay technology has the advantages of strong specificity, high sensitivity, and good practicability. Therefore, it is used to measure low-content biologically active compounds, such as proteins (enzymes, acceptors, antibodies), hormones (steroids, Thyroid hormones, phthalates), drugs and microorganisms, etc. CD BioSciences provides professional fluorescence immunoassay (FIA) services to meet the specific needs of different customers. If you have any needs in this regard, please feel free to contact us.


As a kind of immunoassay, FIA also has two modes, namely competition type and sandwich type. Among them, the competitive type (take the labeled antigen competitive type as an example) is based on the immunoassay method based on the competition between the unlabeled antigen (Ag) and the labeled antigen (Ag-L) to bind to the limited antibody (Ab). For sandwich immunoassays, the reaction principle is to immobilize excess Ab on the immune response carrier, and then add a certain amount of Ag. After the immune response, add excess labeled antibody (Ab-L) to form a "sandwich" "Sandwich immune complex. The more Ag present in the sample and the more Ab-L bound, the stronger the labeled fluorescent signal of the sandwich immune complex.

Overall solution

With many years of FIA technology and rich expertise in IVD test development, CD BioSciences is confident to provide flexible FIA-based test development services. In addition, we also customize personalized FIA-based testing solutions according to your project requirements. If you are interested in our services, please contact us to discuss your project and implement more details.

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Project name Fluorescence immunoassay (FIA)
Our services

CD BioSciences offers fluorescence immunoassay (FIA) to meet the specific needs of different customers.

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Our advantages

  • CD BioSciences attaches great importance to innovation, the combination of production and R&D, and the introduction of high-end scientific research talents.
  • Transparency and integrity are two of our core values. Our well-trained, friendly, and professional study directors and project managers strive to complete your projects on-time with open communication channels and to your specifications.
  • CD BioSciences specializes in fluorescence immunoassay and we are committed to contributing to more customers.
  • CD BioSciences will complete your project on time and efficiently. We have professional after-sales service: which has been established to provide customers with efficient, fast, practical and feasible solutions.

Why choose us?

CD BioSciences provides professional fluorescence immunoassay (FIA) to meet the needs of regular customers to determine hits on time and on budget. CD BioSciences relies on the world-class technical expertise, we provide customers with the best quality one-stop fluorescence immunoassay (FIA), including the development of experimental procedures according to different experimental needs. Please feel free to contact us for more information, our scientists will tailor the most reasonable plan for your project.


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