<prompt> Search for gestational diabetes is carried out at what gestational age?16 weeks20 weeks28 weeks32 weeks  <response>: Ans, c 28 weeks. Ref. Textbook of Obstetrics by Dutta, 3rd ed., 292Note: The actual answer is 24 to 28 weeks.GTT IN PREGNANCY Screening for gestational diabetes should be done between 24-28 weeks of gestation by using glucose tolerance. Test - 50 gm oral glucose without regard to time of day and last meal. Plasma glucose of 140 mg or 130 mg of whole blood at 1 hour is considered cut-off point for consideration of 100 gm WHO 75 gm GTT. TimeWhole blood mgPlasma1Fasting19010521 hr16519032 hr14516543 hr125145 