When it’s done: As part of your first prenatal checkup
As soon as you think you’re pregnant, make an appointment with your provider. At your checkup, they’ll confirm your pregnancy, as well as calculate your due date. Your blood and urine will be tested for sexually transmitted diseases, immunity to certain diseases and your red blood cell count and blood type, among other things.
If you have a family history of some conditions, further testing may be indicated. If you have risk factors for diabetes, you may be screened in the first trimester or even before pregnancy.