Comparison of median glucose levels (mg/dL) as determined with the 75 g OGTT (IQR) between before 20 weeks of gestation and 24–28 weeks of gestation
| 75 g OGTT before 20 weeks | 75 g OGTT at 24–28 weeks | P value | |
| FPG | 93 (88–95) | 87.5 (82–92) | <0.001 |
| 1-hour value | 162 (129–185) | 159 (131–180) | 0.98 |
| 2-hour value | 149 (116–167) | 136.5 (113–157) | 0.21 |
The study participants were instructed to fast for 10 hours before the 75 g OGTT.
FPG, fasting plasma glucose; OGTT, oral glucose tolerance test.