Guidance

Twin pregnancies: second trimester screening for Down’s syndrome

This document explains the procedures for second trimester screening for Down's syndrome (trisomy 21) in women with twin pregnancies.

Documents

Twin pregnancies: second trimester screening for Down’s syndrome (T21)

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Details

This publication explains second trimester Down’s syndrome screening for women with twin pregnancies.

It sets out:

  • the prevalence of the condition
  • when the quadruple screening test should be offered
  • the diagnostic testing options

Clinician notes

The document includes a section for clinicians to annotate and insert into a woman’s hand-held maternity notes.

Published 1 January 2015