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Dry chemistry thin film immunoassay
S Inbar1, G Grenner, J Blackwood
1PB Diagnostics System, Westwood, MA 02090.
Annales De Biologie Clinique
|January 1, 1990
Summary
A novel thin film multilayer immunoassay offers a fast, reliable method for therapeutic drug monitoring and thyroid hormone testing. This technology demonstrates excellent agreement with reference methods, expanding possibilities for low molecular weight analyte assays.
Area of Science:
- Biotechnology
- Analytical Chemistry
- Medical Diagnostics
Background:
- Accurate quantification of therapeutic drugs and thyroid hormones is crucial for patient management.
- Existing immunoassay technologies may face limitations in detection range or speed.
Purpose of the Study:
- To develop and evaluate a novel thin film multilayer immunoassay technology.
- To assess its applicability in therapeutic drug monitoring and thyroid hormone testing.
Main Methods:
- Development of a thin film multilayer chip with reagents in an agarose matrix.
- Utilizing a fluorescent competitive immunoassay in a ligand displacement format.
- Performing assays on an automated instrument with random access capability.
Main Results:
- The immunoassay technology covers a wide detection range (1 x 10(-3) to 1 x 10(-8) M).
- Assays demonstrated speed, reliability, and excellent agreement with established reference methods.
- The technology is suitable for serum or plasma samples and adaptable for other low molecular weight analytes.
Conclusions:
- The novel thin film multilayer immunoassay is a promising advancement for clinical diagnostics.
- It offers a robust platform for therapeutic drug monitoring and hormone level assessment.
- The technology's versatility supports broader applications in analyte quantification.