Gynaecology & Obstetrics General 012f97fe Which of the following is FALSE regarding a normal pregnancy? A Fall in free T4/T3 in 3rd trimester B TSH falls in the first and second trimester but increases in the third trimester C TSH rises in the first and second trimester but falls in the third trimester D There is an increase in Thyroid binding globulin High-Yield Explanation In pregnancy there is a relative iodine deficiency and increased renal excretion. Ref: Karla Philip, 33rd Edition, Page 304