what is a normal RAIU
Normal 24 hour RAIU is between 8 to 35%. Normal 4 hour RAIU is generally between 5 to 15%. % Uptake= [(net neck counts-net thigh counts)x 100] /(net standard counts) The RAIU test provides a useful assessment of thyroid function: in general, the higher the iodine uptake, the more active the gland.