Guidance

First trimester fetal anomaly screening: trisomy 18 and trisomy 13

First trimester screening procedures for trisomy 18 (T18) and trisomy 13 (T13), also known as Edwards' syndrome and Patau's syndrome.

• From: Public Health England
• Published: 1 January 2015

This publication was withdrawn on 25 September 2017

Please see Fetal anomaly screening: programme overview.

Documents

First trimester screening for T18 and T13

Ref: PHE Gateway number: 2014807

PDF, 2.75 MB, 2 pages

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Details

This document explains the combined screening test for trisomy 18 and trisomy 13. It outlines the conditions and sets out the:

• national standards for detection
• risk cut off numbers
• actions for higher risk and lower risk results

The NHS fetal anomaly screening programme (FASP) test for these conditions.

Published 1 January 2015