First trimester Combined Test
The First Trimester Combined Test is a prenatal screening assessment performed during early pregnancy, usually between 11 weeks and 13 weeks + 6 days. It combines an ultrasound examination, including nuchal translucency (NT) measurement, with maternal blood tests and relevant pregnancy information to estimate the chance of certain chromosomal conditions.
NT Ultrasound Assessment
Combined Risk Assessment
First trimester Combined Test
Nuchal Translucency Measurement
Fetal Growth & Measurements
Fetal Cardiac Activity
Early Fetal Anatomy
Maternal Blood Tests
Maternal Information
Chromosomal Risk Screening
Multiple Pregnancy Assessment
Pregnancy Dating
When Is It Recommended?
The First Trimester Combined Test is generally performed between 11 weeks and 13 weeks + 6 days of pregnancy.
- It may be offered as an early screening assessment for chromosomal conditions.
- It combines ultrasound findings with maternal blood-test results.
- It provides an individualized estimate of the chance of selected chromosomal conditions.
- It may help determine whether additional screening or diagnostic testing should be considered.
- Specialized assessment may be required in twin or multiple pregnancies.
- Your doctor or fetal medicine specialist will recommend the most appropriate screening approach for your pregnancy.
Important Information
The First Trimester Combined Test is a screening test, not a diagnostic test. A higher-chance result does not confirm that the baby has a chromosomal condition, while a lower-chance result cannot completely exclude one.
- The test estimates risk for selected chromosomal conditions and does not provide a definitive diagnosis.
- A higher-chance result may require further screening or diagnostic testing.
- Diagnostic testing may include procedures such as chorionic villus sampling or amniocentesis.
- A lower-chance result does not guarantee that the baby has no genetic, chromosomal or structural condition.
- The quality of the ultrasound assessment can be affected by fetal position, gestational age and other factors.
- The combined test does not replace the detailed mid-trimester anomaly scan.