Related Experiment Videos
Development and application of a fully automated continuous flow radioimmunoassay system
Annals of Clinical Biochemistry
|January 1, 1977
Summary
A novel automated radioimmunoassay system uses magnetic beads for rapid antigen separation. This high-precision, continuous flow method requires only 10 minutes incubation, applicable to various ligand assays.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Clinical Diagnostics
Background:
- Radioimmunoassay (RIA) is a widely used technique for quantifying substances.
- Traditional RIA methods can be time-consuming and labor-intensive.
- There is a need for faster, more automated immunoassay systems.
Purpose of the Study:
- To describe a fully automated, continuous flow radioimmunoassay system.
- To present a new approach for assessing binding proteins using this system.
- To demonstrate the system's utility with a thyroid hormone uptake test.
Main Methods:
- Antibodies covalently linked to magnetic cellulose solid phase.
- Electromagnetic field for bound/free antigen separation.
- Flow-through gamma counter for bound fraction detection.
- Auto Analyzer modules for continuous flow operation.
Main Results:
- Assays performed without reaching equilibrium, 10-minute incubation time.
- High reproducibility, high precision, speed, and minimal carry-over.
- Improved discrimination in automated thyroid hormone uptake tests compared to existing assays.
Conclusions:
- The automated RIA system offers significant advantages in speed and efficiency.
- The method is versatile for various ligand and binding protein assays.
- The automated thyroid hormone uptake test provides enhanced diagnostic discrimination.