Reference · Tests

Every prenatal test, explained.

Doula-perspective explainers on every prenatal test — what it is, when it happens, what results mean, and questions worth asking. Sources: ACOG, NICE, SOGC, Cochrane, Evidence-Based Birth.

Reference · Tests

Every prenatal test, explained.

Doula-perspective explainers on every prenatal test — what it is, when it happens, what results mean, and questions worth asking. Sources: ACOG, NICE, SOGC, Cochrane, Evidence-Based Birth.

Cards List Table

23 tests

Best match A–Z Recently updated

Test	When	Type
Amniocentesis	weeks 15–20 (sometimes later)	Diagnostic
Anatomy Scan	weeks 18–22	Routine monitoring
Biophysical Profile (BPP)	weeks 28+	Late pregnancy
Cervical Length Ultrasound	weeks 18–24	Screening
Continuous Glucose Monitoring (CGM) in Pregnancy	after GD diagnosis	Late pregnancy
COVID-19 Vaccination in Pregnancy	any trimester	Routine monitoring
CVS — Chorionic Villus Sampling	weeks 10–13	Diagnostic
Dating Ultrasound	weeks 6–12 (typically 8–10)	Routine monitoring
Fetal Echocardiogram	weeks 18–24	Diagnostic
First Prenatal Blood Panel	weeks 8–12 (first prenatal visit)	Routine monitoring
Flu Vaccination in Pregnancy	any trimester during flu season	Routine monitoring
Genetic Carrier Screening	ideally pre-conception or first trimester	Screening
Glucose Challenge Test (1-hour)	weeks 24–28	Screening
Glucose Tolerance Test (3-hour)	weeks 24–32 (after failed 1-hour)	Diagnostic
Group B Strep Test	weeks 36–37	Screening
NIPT — Cell-Free DNA Screening	from 10 weeks (typically 10–14)	Screening
Non-Stress Test (NST)	weeks 28+ (typically 32+)	Late pregnancy
Nuchal Translucency (NT) Scan	weeks 11–13+6 days	Screening
Preeclampsia Screening (PE Risk Assessment)	first trimester (risk) + ongoing BP monitoring	Screening
Quad Screen / Triple Screen	weeks 15–22 (optimal 16–18)	Screening
RhoGAM (Anti-D Immunoglobulin)	week 28 (routine) + after delivery if baby is Rh+	Routine monitoring
Tdap Vaccination (Pertussis Booster)	weeks 27–36 (ideally 27–28)	Routine monitoring
Umbilical Artery Doppler	weeks 28+ (when IUGR suspected)	Late pregnancy

This is general wellness information, not medical advice. For personalized guidance, talk with your obstetric provider.