Finger cooling test (FCT) may reflect the microvascular function.
The re-warming time was significantly longer in T2DM patients compared with healthy subjects.
The re-warming time was positively correlated with T2DM duration and glycated hemoglobin (HbA1c) level.
T2DM duration and HbA1c were two independent predictors of the long re-warming time in T2DM patients.