Abstract
A method for the detection and possible assay of pituitary thyroid stimulating hormone which utilizes the day-old White Leghorn cockerel and the following procedure: (1) the material to be assayed is injected in 5 equal doses at 5 hr. intervals, (2) a tracer amt. of I131 is injd. 12 hours later, (3) thyroidal uptake of I131 is detd. 5 hrs.later.