Pregnancy is an exciting experience. For many couples, ensuring the health and well-being of both mother and baby means going through prenatal tests. These tests help provide critical information about the pregnancy and detect potential issues early. Let’s explore the different types of prenatal tests in Singapore and why they are essential during pregnancy.
Why Prenatal Tests Are Important
Prenatal tests are essential because they:
- Monitor the health and development of the baby.
- Detect potential genetic or chromosomal abnormalities.
- Identify conditions that could affect the mother’s or baby’s health, allowing for early intervention.
- Help expectant parents be better informed about their pregnancy.
With these tests, parents can better prepare for the arrival of their baby. They would know beforehand if the baby needs specialised medical care or not.
First Trimester Screening
First-trimester screening will take place between weeks 11 and 14 of pregnancy. It requires a blood test and an ultrasound to assess the risk of specific chromosomal irregularities, such as Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18).
First-trimester screening consists of:
- Blood Test: Measures amounts of two pregnancy-specific substances, human chorionic gonadotropin (hCG) and pregnancy-associated plasma protein-A (PAPP-A).
- Nuchal Translucency (NT) Ultrasound: Examines fluid thickness at the back of the baby’s neck. Abnormal measurements may indicate a higher risk of chromosomal abnormalities.
You could also opt for the Non-Invasive Prenatal Test (NIPT), which can be performed from 10 weeks of pregnancy.
NIPT (Non-Invasive Prenatal Test):
- Involves a simple blood test from the mother that contains both maternal DNA and cell-free fetal DNA.
- Provides high accuracy in detecting conditions such as Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), Patau syndrome (trisomy 13), sex chromosome disorders, and micro-deletion syndromes like DiGeorge syndrome.
Non-invasive screening helps identify pregnancies requiring extra diagnostic testing. These may include chorionic villus sampling (CVS) or amniocentesis.
Ultrasound:
A detailed second-trimester ultrasound, often called an anatomy scan, is performed around 20 weeks. It screens for gross fetal anomalies and assess other aspects such as placenta, amniotic fluid and growth of fetus. Abnormalities detected may sometimes necessitate invasive prenatal testing to exclude major chromosome issues
Other Important Tests
In addition to first and second-trimester screenings, several other prenatal tests are necessary to ensure a healthy pregnancy. These include:
75g Oral Glucose Tolerance Test
The glucose screening test, performed between weeks 24 and 28, checks for gestational diabetes. This condition may happen when the body cannot produce enough insulin to manage increased blood sugar levels during pregnancy.
Managing gestational diabetes is essential to prevent complications such as high birth weight or preterm birth.
Group B Streptococcus Test
Group B Streptococcus (GBS) is a type of bacteria that can be present in the mother’s rectum or vagina. While it’s typically harmless for adults, it can cause serious infections in newborns.
Procedure:
- A swab of the rectum and vagina is taken between weeks 36 and 37.
- If GBS is detected, the mother will receive antibiotics during labour to prevent transmission to the baby.
Blood Typing and Rh Factor
Blood typing determines the mother’s blood type (A, B, AB, or O) and Rh factor (positive or negative). The Rh factor is particularly important because:
- If the mother is Rh-negative and the baby is Rh-positive, it can cause Rh incompatibility.
- Rh incompatibility may lead to hemolytic disease in the newborn, where the mother’s immune system destroys the baby’s red blood cells.
Preventive Measure:
- Rh-negative mothers receive an injection of Rh immunoglobulin (RhIg) during pregnancy and after birthing to prevent complications.
Infectious Disease Screening
Screening for infectious diseases ensures that any infections are identified and managed promptly to protect both mother and baby. Common screenings include:
- HIV: Early detection allows for treatment to reduce the risk of mother-to-child transmission.
- Hepatitis B: Identifies infections that could be passed to the baby during birth.
- Syphilis: If untreated, syphilis can cause miscarriage, stillbirth, or congenital syphilis.
- Rubella Immunity: Ensures the mother is immune to rubella (German measles), as infection during pregnancy can harm the baby.
Prenatal Tests in Singapore
Prenatal tests are vital to ensuring a healthy pregnancy for both the mother and baby. These procedures are key to safeguarding your pregnancy journey and provide valuable insights into the baby’s development.
At W Gynae Women’s Clinic, we provide prenatal tests in Singapore. We focus on accuracy, comfort, and support. By staying proactive with prenatal testing, you’re taking a step towards a safe and joyful experience in welcoming your little one into the world.