Table 1:

Risk categories for Gestational Diabetes Mellitus (GDM)

High Risk

(One or more of the following) marked obesity diabetes in a first-degree relative history of glucose intolerance previous infant with macrosomia current glycosuria

The above category of patients should be subjected to screening as soon as possible after the initial visit and if negative repeat at 24–28 weeks

Low risk patients

Young age < 25 years old

Low risk race

Normal weight gain

No history of macrosomia

Average risk patients

Do not fit into either of the above categories and should have routine screening at 24–28 weeks of gestation

Adapted from Kjos et al, 1999 (6).