Before the development of the ELISA, the only option for conducting an immunoassay was radioimmunoassay, a technique using radioactively labeled antigens or antibodies.
22.
In 1971, the thyroid stimulating hormone ( TSH ) radioimmunoassay was developed, which was the most specific marker for assessing thyroid status in patients.
23.
They investigated the binding interaction for insulin and an insulin-specific antibody, in addition to developing the first radioimmunoassay ( RIA ) for insulin.
24.
Hazra, considered by many as a pioneer of nuclear medicine in India, is best known for his contributions to radioimmunoassays and enzyme-linked immunosorbent assays.
25.
In some cases the use of biotinylated antibodies has allowed the replacement of radioiodine labeled antibodies in radioimmunoassay systems, to give an assay system which is not radioactive.
26.
125 I is frequently used in radioimmunoassays because of its relatively long half-life ( 59 days ) and ability to be detected with high sensitivity by gamma counters.
27.
In 1971, Dr . Gharib and his colleagues reported in the Annals of Internal Medicine the utility of the new TSH radioimmunoassay ( RIA ) measurement in thyroid practice.
28.
Radioimmunoassay ( RIA ) can be used to measure a multitude of substances found in tiny quantities in fluids within and outside of organisms ( such as viruses, drugs and hormones ).
29.
Immunologic pregnancy tests were introduced in 1960 when Wide and hCG, was made possible after the invention of the radioimmunoassay in 1959 . Radioimmunoassays require sophisticated apparatus and special radiation precautions and are expensive.
30.
Immunologic pregnancy tests were introduced in 1960 when Wide and hCG, was made possible after the invention of the radioimmunoassay in 1959 . Radioimmunoassays require sophisticated apparatus and special radiation precautions and are expensive.
