Maternal Serum Screening
Down Syndrome, Trisomy 18 and Neural Tube Defects
Nuchal Translucency (NT)
March 2011
NT measurement is a technically difficult measurement to obtain, therefore can only be performed by certified sonographers. This certification could be obtained by either the Fetal Medicine Foundation or the Nuchal Translucency Quality Review Program.
Mayo Medical Laboratories require that sonographers submit proof of certification prior to submitting measurements for risk estimation. In addition, we request that sonographers submit paired NT and crown-rump length measurements from as many pregnancies as possible in order to determine the NT median to apply to each sonographer when future risk calculations are performed. Selection of the right NT median based on sonographer performance it is important as this will greatly influence the risk calculation.
Nuchal Translucency (NT) |
Jump to section:
- Introduction
- What is Maternal Serum Screening?
- Who Should Be Offered Maternal Serum Screening?
- Maternal Serum Screening: Options
- Maternal Serum Screening: Risk Calculation
- First Trimester Serum Screening
- Nuchal Translucency (NT)
- Nuchal Translucency (NT)
- Nuchal Translucency (NT)
- First Trimester Serum Screening
- First Trimester Screening
- Second Trimester Screening
- Second Trimester Screening
- Second Trimester Screening
- Sequential Screening
- Sequential Screening
- Sequential Screening
- Sequential Screening
- Mayo Medical Laboratories Maternal Serum Screening Options
- References
- Questions?
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