Amos Grünebaum, MD FACOG
Obstetrician & Gynecologist and Maternal-Fetal Medicine Specialist

Timing of Common Tests and Examinations during Pregnancy

Weeks	Test/Service	Service
Prior to pregnancy	See your doctor for a periconception visit. Complete the Interactive Periconception Interview. Print out and show your doctor Start taking a prenatal vitamin supplement including folic acid at least 1-2 months prior to conception Add calcium/magnesium and Omega-3	ObGyn doctor Dentist Other specialists
First Visit	Routine first visit tests ; Optional Tests: Genetic tests like Fragile X-Testing, Ashkenazi Jewish Genetic Panel,
Between 11w3d and 13w6d First Stage Screening	Fetal Neck Translucency (NT) Screen + blood test  for risk of Down Syndrome.  Ultrasound measures thickness of skin behind fetus’ neck and blood test done for free beta  hCG and Pregnancy Associated Plasma Protein A (PAPP). Risk is  calculated based on the results. Read more HERE.	Ultrasound + Blood Test for free beta hCG and PAPP The test is done on the 7th floor in our ultrasound unit
Each Trimester	See your dentist prior to and early in pregnancy for evaluation of your teeth and cleaning. Read more about pregnancy and dental care HERE and  THERE and also learn here  more about pregnancy and your dentist.
Between 15 and 18 weeks Second Stage Screening	Modified Sequential Screen measures four chemicals in blood [alphafetoprotein (AFP), unconjugated estriol (uE2), inhibin-A, total human chorionic gonadotropin (hCG)]. Results are  compared to a woman's age and the NT screen and calculates risks of neural tube defect (NTD) and Down syndrome	Blood test
Between 15 and 17 weeks Amniocentesis	If indicated:  Call for appointment for genetic counseling several weeks prior to amniocentesis; counselor will make appointment for amniocentesis (usually done by Dr.Grunebaum on Tuesdays in the ultrasound unit on the 7th floor). See instructions HERE	Genetic Counseling & Ultrasound
Around 20 Weeks Fetal Anatomy Ultrasound;	Drink 2-4 glasses of water within 1-2 hours prior to test; Do not void about 1 hour prior to test, but not to a level of discomfort.	Ultrasound: The test is done on the 7th floor in our ultrasound unit
24-28 weeks	GCT: 1-hour Glucose Challenge Test Instructions: It is not necessary to fast, it is OK to eat before. When you arrive, please drink 50 gram glucose drink, You will then have a blood test 1-hour later The GCT is a screening test. If the GCT is elevated (>135), then a 3-hour  GTT is needed to diagnose diabetes.	Blood test J-130
32-34 weeks	Optional: Fetal size measurements (ultrasound)	Ultrasound
After 28 weeks	Optional: Fetal testing and evaluation	Fetal evaluation unit