THYROID (T3) SUPPRESSION TEST (Y19,612) (T3) MEDICINE (3 TIMES/DAY) FOR 1 WEEK, (75ugram/day) -SAME AS THYROID UPTAKE SCAN (3HR POST 123I ADMINISTRATION),(THYROID UPTAKE),(PRESET TIME=2MIN),(SUPINE),(ANT),(CAPSULE CALIBRATED WITH PHANTOM), (A BACKGROUND ACTIVITY AT THE KNEE JOINT) -SOMETIMES 24HR UPTAKE IS CALCULATED. (NO IMAGE IS REQUIRED). *T3 SUPPRESSION TEST-FAILURE TO SUPPRESS -EUTHYROID AUTONOMOUS ADENOMA -EUTHYROID GRAVES' DISEASE -GRAVES' DISEASE WITH HYPERTHYROID FUNCTION -TOXIC ADENOMA -TOXIC MULTINODULAR GOITER |