Thru FBS and OGTT. If meron kayong family history of diabetes or pre-diabetes, OB will have you undergo an FBS kasabay ng mga first lab tests. Tapos yung OGTT usually nirerequest siya during the second trimester.
Nire request po ng ob na magpa fbs or ogtt para malaman kung meron nyan
OGTT sis.. para malaman mo kung may GDM ka