The fasting insulin levels of patients with normal oral GTT results were significantly lower than those of patients with either gestational diabetes or a single abnormal result.

• 口服糖耐量试验结果正常者，空腹胰岛素浓度比妊娠性糖尿病患者，或者口服糖耐量试验有一次结果异常者明显较低。