The glucose challenge test is done during pregnancy to screen for gestational diabetes - diabetes that develops during pregnancy. One-hour glucose tolerance test for pregnant women. A blood sugar level of 140 mg/dL (7.8 mmol/L) to less than 190 mg/dL (10. https://ikjs.cloudfree.jp/doku.php?id=don_t_fall_fo_this_blood_glucose_mete_scam