Pregnancy Ultrasounds

Nuchal Translucency Scan and Serum Testing for First Trimester Screening



First trimester chromosomal screening using Nuchal Translucency Program is recommended for all pregnant women in the first trimester of pregnancy.The combination of nuchal translucency scan and maternal blood tests can identify up to 95% of Down syndrome pregnancies. This scan is also useful in confirming viability, identifying multiple pregnancies, diagnosing major structural abnormalities and accurately dating the pregnancy.


Dr. Indika Alahakoon’s Specialist Rooms at The Norwest Hospital is an accredited centre for performing first trimester Down syndrome screening using Fetal Medicine Foundation software from London, UK.


First trimester screening at Dr. Indika Alahakoon’s rooms will include a detailed high quality scan followed by first trimester serum screening.  Four independent risk factors are used in the chromosomal risk assessment including mothers age, the nuchal translucency thickness in the fetus, the presence of the nasal bone and mothers serum level of hormones beta-hCG and PAPP-A.


The nuchal translucency scan is recommended between 11.5 and 14 weeks of pregnancy, as this is the stage of the pregnancy, when the thickness of the nuchal translucency fluid layer is seen differently from chromosomally a normal fetus.


reader 128 Click to download an information leaflet on Nuchal Translucency Screening.