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Testing During pregnancy | |
Time (week) | Assessment |
Initial (as early as possible) |
Hemoglobin or hematocrit measurement
Urinalysis, including microscopic examination and infection screen Blood group and Rh type determinations Antibody screen Rubella antibody titer measurement Syphilis screen Cervical cytology Hepatitis B virus screen |
8-18 |
Ultrasound
Amniocentesis Chorionic villus sampling Maternal serum alpha-fetoprotein |
26-28 |
Diabetes screening
Repeat hemoglobin or hematocrit measurement |
28 |
Repeat antibody test for unsensitized Rh-negative patients
Prophylactic administration of Rho(D) immune globulin |
32-36 |
Ultrasound
Testing for sexually transmitted disease Repeat hemoglobin or hematocrit measurement Culture for Group B streptococcal colonization |
Indications for Prenatal Diagnostic Testing for Birth Defects
Multifactorial disorder in first-degree relatives
Routine Assessment of Intrauterine Growth and Maturation
Document maturity and EDC
Intrapartum Assessment