What to Expect

While your doctor has likely already given you instructions on how to get ready for your appointment, we’ve included common pre-test preparation to help ensure you get proper test results. If you have any questions, please consult with your doctor.

  • Amniocentesis: 3 (8 oz.) glasses of fluid (non-carbonated). Finish drinking one hour prior to ultrasound. Do not urinate (full bladder required). Light breakfast recommended.
  • CVS: 3 (8 oz.) glasses of fluid (non-carbonated). Finish one hour prior to ultrasound. Do not urinate (full bladder required). Light breakfast recommended.
  • 1st Trimester Ultrascreen: 3 (8 oz.) glasses of fluid (non-carbonated). Finish drinking one hour prior to ultrasound. Do not urinate (full bladder required). Light breakfast recommended.
  • 1st Trimester Transvaginal Ultrasound (up to 12 weeks pregnant): No preparation required.
  • Nonstress test or Biophysical profile: No preparation required.
  • Ultrasound:
    • (2nd trimester targeted ultrasound): 3 (8 oz.) glasses fluid (non-carbonated). Finish drinking one hour prior to ultrasound. Do not urinate (full bladder required).
    • After 28 weeks of pregnancy: No preparation required.