Half life of T4 is: (A) 20 minutes, (B) 12 hours, (C) 1 day, (D) 6 days
Answer is D. Ans: D. 6 days(Ref: Ganong 25th/e p. 338-341; Understandings of medical physiology p. 7l9)Half life of T3 = 1 dayHalf life of T4 = 6 days.