Laboratory Tests

Some routine lab tests are done on all pregnant women at different times during the pregnancy.

Other tests are done for a specific indication.

Early in pregnancy, obtain:

  • Complete Blood Count, including hemoglobin or hematocrit, MCV, white blood count and platelet count
  • Urine protein and urine culture
  • Blood group and Rh type
  • Atypical antibody screen
  • Rubella immunity. If non-immune, plan to immunize postpartum.
  • Varicella Immunity. If non-immune, plan to immunize postpartum
  • RPR or VDRL (for syphilis)
  • Chlamydia
  • Gonorrhea
  • Hepatitis B and Hepatitis C
  • HIV
  • Pap Smear if over age 21 and due for one.
  • Ultrasound for identification of accurate gestational age, and multiple gestations.
  • Screening for fetal aneuploidy

In addition, patients at high risk may require testing for:

  • Type II Diabetes
  • Thyroid disease
  • TB (tuberculosis)
  • Toxoplasmosis
  • Thalassemia
  • Sickle Cell
  • Tay Sachs
  • Cystic Fibrosis
  • Fragile X
  • Chagas Disease
  • Phenylketonuria
  • Spinal Muscular Atrophy
  • Cytomegalovirus
  • Lead

Subsequent lab tests at 24-28 week include:

  • Hemoglobin or hematocrit
  • Glucose screening
  • Administration of Rhogam to Rh negative women

Subsequent tests at 35-37 weeks:

  • Group B Strep

Other testing may be indicated, based on earlier laboratory tests, medical or social factors, and clinical findings during the pregnancy.

 

Women's Healthcare in Operational Settings