Abstract
In vitro examination in the nuclear medicine field, because of its high sensitivity, splendid reproducibility and simple, easy operation procedure, is indispensable for the measurement of microsubstances such as hormone in the blood, etc. Its application extends over a wide range of medical study. This time, we focused on the investigation of several themes of radioimmunoassay which seems most influential and most important. And, we want to keep detailed investigation or description on the entire field of nuclear medicine for another occasion.
