Understanding Prenatal Screening: What Tests & Screenings Are Essential and When?

For expecting mothers in New Lenox, Illinois, and surrounding areas, pregnancy is an exciting journey filled with anticipation and important decisions. One of the most crucial aspects of prenatal care is screening—these tests provide valuable insights into your baby’s health and help your care team at Partners in Obstetrics & Women’s Health guide you through a healthy pregnancy. Let’s break it down so you can feel confident and informed at every stage of your pregnancy.

First Trimester Screenings (Weeks 1–13)

The first trimester is all about establishing a healthy foundation for your pregnancy. This is when we confirm your pregnancy, estimate your due date, and perform initial screenings.

Essential Tests:

• Blood Tests & Urinalysis: Early bloodwork checks for your blood type, Rh factor, anemia, infections, and immunity to diseases like rubella. A urinalysis helps detect early signs of conditions like gestational diabetes or preeclampsia.

• Genetic Carrier Screening: If you or your partner have a family history of genetic conditions, we may recommend carrier screening to check for inherited conditions such as cystic fibrosis or sickle cell disease.

• First Trimester Combined Screening: This includes a nuchal translucency (NT) ultrasound and blood test to assess the risk of chromosomal conditions like Down syndrome.

• Early Non-Invasive Prenatal Testing (NIPT): A simple blood test that can provide early insights into chromosomal abnormalities and even your baby’s sex.

Second Trimester Screenings (Weeks 14–27)

This is when things start to feel more real—many moms in New Lenox tell us that seeing their baby on the anatomy scan is one of the most memorable moments of their pregnancy.

Essential Tests:

• Quad Screen (Weeks 15–20): A maternal blood test that screens for neural tube defects and chromosomal conditions.

• Anatomy Ultrasound (Weeks 18–22): This detailed ultrasound checks your baby’s growth, organs, and spine. It’s also when you can find out your baby’s gender—if you want to!

• Glucose Screening (Weeks 24–28): Gestational diabetes can develop even in healthy pregnancies. This test ensures we catch it early so we can help you manage it effectively.

Third Trimester Screenings (Weeks 28–40)

As you enter the home stretch, prenatal care focuses on monitoring your baby’s growth and preparing for a safe delivery.

Essential Tests:

• Group B Strep (GBS) Screening (Weeks 35–37): A simple swab test checks for a common bacterium that, if present, may require antibiotics during labor to protect your baby.

• Non-Stress Test (If Needed): If you have a high-risk pregnancy, we may recommend this test to monitor your baby’s heart rate and movements.

• Ultrasounds & Additional Bloodwork: Some women may need additional monitoring for conditions like high blood pressure, low amniotic fluid, or fetal positioning concerns.

Why These Tests Matter

Prenatal screenings are more than just routine check-ups—they help us catch potential concerns early, personalize your care, and give you peace of mind. At Partners in Obstetrics & Women’s Health, we understand that every pregnancy is unique. Whether you’re a first-time mom or adding to your family, our team is here to guide you with compassionate, personalized care.

Get Started at Partners in Obstetrics & Women’s Health

If you’re expecting—or planning to be—now is the time to schedule your first prenatal appointment. Our providers at Partners in Obstetrics & Women’s Health are dedicated to caring for women in New Lenox and the surrounding communities. We’ll walk you through every step of your pregnancy, ensuring you have the support and information you need.

Schedule your prenatal screening with Partners in Obstetrics & Women’s Health, and start your journey with an expert team that truly cares. Visit our office in New Lenox, Illinois, or call (815) 240-0554 to book an appointment today.