Reference intervals for urinary glucose in pregnancy.

Abstract

Reference interval upper limits for glucose in urine from non-fasting pregnant women, estimated by a glucose dehydrogenase method are higher than for non-pregnant women (1.4 mmol/l) and increase with gestational age: week 10-20, 2.0 mmol/l (n = 158); week 21-30, 2.3 mmol/l (n = 124) and week 31-42, 2.7 mmol/l (n = 245). The reagent strip Tes-Tape correctly identified glucosuria above a clinical decision limit of 7 mmol/l and reacted in two-thirds of urine samples with from upper reference interval to 8 mmol/l of glucose. The reagent strip Uristix in no case gave a positive reaction.