This is a screening test for gestational diabetes, recommended for pregnant women. When is the test ordered? The test may be usually recommended between 24 and 28th weeks of pregnancy. It is usually recommended to women who are obese and have a family history of gestational diabetes or of diabetes in any form.

What is GCT advice and why?

The glucose challenge test, Pregnancy measures the levels of glucose in the blood, two hours after the administration of a sugar solution (usually 75 gm glucose dissolved in about 300 ml water). This helps to determine whether the body is able to utilize or store glucose efficiently.

Why is GCT test done?

The glucose challenge test, also called the one-hour glucose tolerance test, measures your body's response to sugar (glucose). The glucose challenge test is done during pregnancy to screen for gestational diabetes — diabetes that develops during pregnancy.