Chorionic Villus Sampling (CVS): A Guide for Expecting Parents

If you’re navigating high-risk pregnancy or genetic concerns, your doctor may recommend chorionic villus sampling (CVS). This prenatal test helps detect genetic abnormalities early. In this article, we’ll explain how CVS works, its risks, and how it fits into your pregnancy stages journey.

What is Chorionic Villus Sampling (CVS)?

CVS is a prenatal test performed between weeks 10-13 of pregnancy. It involves taking a small sample of placental tissue (chorionic villi) to test for genetic conditions like Down syndrome or cystic fibrosis. Unlike a pregnancy calculator or ovulation test, CVS provides diagnostic clarity.



Why is CVS Recommended?
Common Reasons:
  • Family history of genetic disorders.
  • Abnormal pregnancy symptoms or ultrasound results.
  • Advanced maternal age (over 35).
How is CVS Performed?
Two Methods:
  1. Transcervical: A thin tube is inserted through the cervix.
  2. Transabdominal: A needle is guided through the abdomen.

The procedure takes 10-30 minutes and is done under ultrasound guidance.

Risks and Considerations
Potential Risks:
  • Miscarriage (1% risk).
  • Infection or cramping.
  • Spotting (similar to very early signs of pregnancy at 1 week).

Discuss alternatives like amniocentesis with your doctor.

Preparing for CVS
Steps to Take:
  • Stay hydrated and wear comfortable maternity leggings.
  • Bring a support person to the appointment.
  • Plan rest time afterward—skip workouts or prenatal massage that day.
After CVS: Next Steps
  • Results take 1-2 weeks.
  • Continue prenatal vitamins and monitor for signs of pregnancy complications (e.g., heavy bleeding).
  • Use a due date calculator to track your progress.
Final Thoughts

CVS can provide peace of mind or prepare you for challenges ahead. Pair it with self-care—whether that’s cozy maternity wear or emotional support—and remember, you’re not alone. Once you’re ready, focus on joyfully planning your baby announcement!

Have questions about CVS or prenatal testing? Ask below!

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