Fluorescence Immunoassay (FIA)

Fluorescence immunoassay (FIA) is an analysis technique based on the specific recognition of antibodies-antigens to detect and quantify mobile target molecules by fluorescent signals. Alta DiagnoTech has mastered the advanced FIA technology and provides a wide range of FIA products that can be used for in vitro diagnostics (IVD) to accelerate the application of FIA technology in the IVD field.

What is FIA?

FIA is a quantitative method using fluorescently labeled antibodies or antigens to detect target substances in liquids like serum or urine, commonly used in clinical and biochemical diagnostics. It measures antigens and antibodies in liquids and tissue sections. Once a tracer binds to the antigen or antibody, a fluorescence detector observes or measures the fluorescence, determining presence, localization, and quantifying levels.

Fig.1 Ffluorescence immunoassay principle. Fig.1 Principle of fluorescence immunoassay. (Wang, et al., 2021)

Applications of FIA Products in IVD

The wide applicability and value of FIA in IVD help to provide rapid, sensitive, and reliable diagnostic information to support clinical decision-making. The following are some typical applications of FIA products in IVD:

Infectious Disease Testing: FIA products can be used to test for a variety of infectious disease pathogens such as viruses.
Hormone Level Measurements: FIA products can be used to quantify blood levels of hormones such as thyroid hormones, sex hormones, and cortisol.

Cardiac Marker Assays: FIA products are useful in the detection of cardiac markers such as troponin, B-type natriuretic peptide (BNP), etc.
Allergen Testing: FIA products can be used to detect serum levels of specific IgE antibodies to assess allergic reactions and help identify allergen types.

Our Featured FIA Products

Alta DiagnoTech provides advanced, precise FIA products that help clients improve the accuracy and efficiency of their clinical diagnostics.

Enzyme-Linked Fluorescent Assay Test Kits
Our products can be used to efficiently and sensitively detect the presence and concentration of specific proteins or antibodies.

Fluorescent Immunochromatography Kits
Our products provide clients with solutions for rapid qualitative or semi-quantitative analysis of specific molecules.

Flow Cytometry Kits (FIA)
Our products help clients to analyze and classify different types in cell populations.

FIA Microscopy Kits
Our products use microscopy to monitor and analyze specific molecules in cell or tissue samples.

Indirect FIA Kits
Our products detect the presence and distribution of antibodies in samples.

Alta DiagnoTech's innovative FIA products deliver unprecedented precision and agility in IVD. Our FIA products capture every microscopic change, enabling efficient decision-making and patient care breakthroughs. Together, let's open up new horizons in health diagnostics, and feel free to contact us to explore the potential possibilities.

Reference

Wang W, Wang J, Wang M, et al. Rapid quantification of chlorpromazine residues in pork using nanosphere-based time-resolved fluorescence immunoassay analyzer[J]. International Journal of Analytical Chemistry. 2021.