Laboratory Aids to Diagnosis and Therapy

Clinical Chemistry

“…X'alues for serum protein iodine may be unusually high after treatment with thiourea, thiouracil, and iodine. However, the fraction which causes this elevation is not extractable with butanol, whereas thyroxine is so extracted (98). Therefore, butanol-extractable iodine may prove to be a more specific value than serum protein iodine as a measure of hormonal iodine (111).…”