Following are some common tests that may be recommended during your pregnancy. They may not be recommended for every pregnancy, but are included in the table for the sake of those who need them.
| TEST | GESTATIONAL AGE (weeks) | PURPOSE OF TEST |
|---|---|---|
| Dating ultrasound | 7–12 | Confirm viability of pregnancy, establish due date, rule out multiple gestations |
| Harmony, MaterniT21, Panorama, or Verifi | 9–20 | These are newly available tests for some women that use a sample of maternal blood to screen for genetic defects in the fetus. |
| Nuchal translucency test (ultrasound) | 11–12 | Part of the first trimester screen for Down syndrome |
| Chorionic villus sampling(CVS) | 10–12 | Diagnostic test that samples the placental tissue for genetic abnormalities; recommended for some women but should be offered to all women |
| AFP/quad screen | 15–18 | A blood test to screen for defects such as spina bifida and to complete the second trimester screen for Down syndrome |
| Amniocentesis | 16–18 | Another diagnostic test that samples the amniotic fluid for genetic abnormalities; recommended for some women but again should be offered to all women |
| Anatomy ultrasound | 18–22 | An ultrasound to look at the baby from head to toe to make sure he is developing normally (to rule out many birth defects) |
| Glucose screen | 24–28 | A test for gestational diabetes |
| Group B strep (GBS) swab | 35–37 | To see if the birth canal is colonized with group B strep bacteria (if so, mom will be given antibiotics during a vaginal delivery to protect the baby) |
| Non-stress test (NST) | 40–42 | A test of the baby’s heart rate patterns to determine fetal well-being, despite going past his due date. Often done earlier in pregnancy for other complications like high blood pressure and diabetes. |
| Biophysical profile (BPP) | 40–42 | An ultrasound test to determine fetal well-being. Also often done earlier in pregnancy for other complications. Includes an assessment of amniotic fluid volume. |