Double Marker - First Trimester11

Tests Included (2)

Understanding the Double Marker Test: A Doctor's Perspective on First-Trimester Screening

Hi there! I'm Dr. Kovid, and I'm here to talk about the Double Marker Test, a prenatal screening test offered during the first trimester of pregnancy. It's a valuable tool for assessing your baby's health, but it's important to understand what it does and doesn't tell you.

 

What is the Double Marker Test?

The Double Marker Test, also known as first-trimester screening, is a blood test that measures the levels of two pregnancy hormones:

• Free beta-human chorionic gonadotropin (beta-hCG): This hormone is produced by the placenta and its levels typically rise throughout pregnancy. However, abnormally high levels can be associated with an increased risk of Down syndrome or trisomy 18.
• Pregnancy-associated plasma protein-A (PAPP-A): This protein is produced by the developing fetus and the placenta. Low levels of PAPP-A may be associated with an increased risk of Down syndrome.

 

Why is it Done?

The Double Marker Test is not a diagnostic test. It can't definitively tell you whether your baby has a chromosomal abnormality. However, it can estimate your risk of having a baby with certain conditions, such as:

• Down syndrome: This is a genetic condition caused by having an extra copy of chromosome 21.
• Trisomy 18: This is a serious genetic condition where a baby has three copies of chromosome 18 instead of the usual two.

 

What to Expect During the Test

The Double Marker Test is a simple blood test. You'll likely have it done between 11 and 13 weeks of pregnancy. Here's a breakdown of what to expect:

• No fasting required: Unlike some other blood tests, you don't need to fast beforehand.
• Quick and easy procedure: A healthcare professional will draw a small amount of blood from your arm.
• Results within days: You'll typically receive your results within a few days.

 

Understanding Your Results

Your doctor will interpret your Double Marker Test results along with other factors, such as your age and a nuchal translucency (NT) scan. This scan measures the fluid collection at the back of your baby's neck, which can also be an indicator of certain chromosomal abnormalities.

• Low-risk: This means your chance of having a baby with a chromosomal abnormality is low. However, it doesn't guarantee a healthy baby.
• High-risk: This doesn't necessarily mean your baby has a problem. It simply means you have an increased chance and may be offered further testing, such as amniocentesis or chorionic villus sampling (CVS). These are diagnostic tests that can confirm or rule out a chromosomal abnormality.

 

Important Considerations

• The Double Marker Test is not perfect. It can miss some cases of chromosomal abnormalities, and it can also give a false-positive result (indicating a higher risk when the baby is actually healthy).
• The decision of whether or not to have additional testing is entirely up to you. Your doctor will discuss the risks and benefits of each option with you in detail.

 

Additional First-Trimester Tests

Besides the Double Marker Test, other prenatal screening tests are available during the first trimester:

• Combined first-trimester screening: This combines the Double Marker Test with the nuchal translucency scan for a more accurate risk assessment.

 

Second-Trimester Tests

• Quad screen or quadruple marker test: This blood test measures four different markers to assess the risk of chromosomal abnormalities.
• Maternal serum alpha-fetoprotein (AFP) test: This test measures the level of AFP in your blood. An abnormal level may indicate a neural tube defect in the baby.

Remember: The Double Marker Test is a valuable tool for early pregnancy screening. It can provide peace of mind or prompt further investigation. If you have any questions or concerns about this test or your pregnancy in general, please don't hesitate to talk to your doctor.

 

Double Marker - First Trimester FAQs

1. How long will the results take?

Answer: You will receive your reports through SMS and Email from Thyrocare within 24/48 hours

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2. What is the process for the sample collection?

Answer: As soon as the order is placed with us, our team will reach out to you on your registered number (please ensure your phone is reachable) to confirm the order. Once you connect with Thyrocare's team member a payment link will be sent to you on your number via SMS/Email. Our highly professional, trained and vaccinated Thyrocare's eMedic would be at your doorstep at the slot booked by you (available slots can be seen on order confirmation page).

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3. When should I take Double Marker - First Trimester?

Answer: Since Double Marker - First Trimester is a fasting profile, it is best to get it done early in the morning.

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4. Any precautions to be taken prior to task Double Marker - First Trimester?

Answer: Do not eat or drink anything except water at least 10 to 12 hours before the test.

Booking Procedure:

• Fill the booking form on right side with Name, Address, Mobile no.
• Blood/Urine samples will be collected from your Home address. 10-12 hrs fasting is required.
• You need to make the payment by cash to Thyrocare when Technician comes to pick up the samples OR Pay online after confirmation of booking.
• Reports will be couriered at your residence in 3-4 working days if hardcopy is opted. We will email the reports within 48-72 hrs on your email address mentioned while booking.

• Sample pickup at home
• Online reports within 48 hours