What are the uses of radioimmunoassay?

Answer 1

In an extensive sense radiochemistry is the chemistry of radioactive materials; this field of chemistry is now very developed. For some details see: http:/en.wikipedia.org/wiki/Radiochemistry. In the sense of the effect of ionizing radiations on chemicals radiopolymerization is probably the most important application.

Answer 2

Carbon dating, radiotherapy, smoke detectors, nuclear medicine, industrial applications, nuclear reactors, nuclear bombs and ammunition, dirty bombs, irridation of food and as tags.

Can find and kill forms of cancer

Answer 3

Radioimmunoassay (RIA) is a sensitive method for measuring very small amounts of a substance in the blood. Radioactive versions of a substance, or isotopes of the substance, are mixed with antibodies and inserted in a sample of the patient's blood. The same non-radioactive substance in the blood takes the place of the isotope in the antibodies, thus leaving the radioactive substance free.

The amount of free isotope is then measured to see how much of the original substance was in the blood. This isotopic measuring method was developed in 1959 by two Americans, biophysicist Rosalyn Yalow (1921-) and physician Solomon A. Berson (1918-1972).

HistoryYalow and Berson developed the first radioisotopic technique to study blood volume and iodine metabolism. They later adapted the method to study how the body uses hormones, particularly insulin, which regulates sugar levels in the blood. The researchers proved that Type II (adult onset) Diabetes is caused by the inefficient use of insulin. Previously, it was thought that diabetes was caused only by a lack of insulin.

In 1959 Yalow and Berson perfected their measurement technique and named it radioimmunoassay (RIA). RIA is extremely sensitive. It can measure one trillionth of a gram of material per milliliter of blood. Because of the small sample required for measurement, RIA quickly became a standard laboratory tool.

How RIA WorksAs an example of how this technique works, let's apply it to insulin. To measure insulin, the first step is to mix known amounts of radioisotope-tagged insulin and antibodies. These combine chemically. Next, a small amount of the patient's blood is added. The insulin contained in the blood displaces some of the tagged insulin. The free-tagged insulin is then measured with isotope detectors and the patient's insulin level is calculated. Uses for RIARIA has many uses, including narcotics (drug) detection, blood bank screening for the hepatitis (a highly contagious condition) virus, early cancer detection, measurement of growth hormone levels, tracking of the leukemia virus, diagnosis and treatment of peptic ulcers, and research with brain chemicals called neurotransmitters.

Read more: http://www.discoveriesinmedicine.com/Ni-Ra/Radioimmunoassay-RIA.html#b#ixzz2SCkL13h6

Answer 4

Get Detailed overview and uses of immunoassays at Bcc research.

Answer 5

a method employing radioactive isotopes to label either the antigen or antibody