(2) how many NHS trusts carry out nuchal fold scans.
Guidance for the national health service on more accurate tests for Down’s syndrome screening was published by the Department on 11 November 2003. The guidance provides a suggested time frame for progress. Nuchal translucency combined with serum tests are performed around 11 to 14 weeks and is one of the recommended tests for Down’s syndrome screening. The national Down’s syndrome screening programme advise that currently almost 25 per cent. of NHS trusts implement this form of screening. The nuchal fold scan performed between 18 to 20 weeks of pregnancy is not currently recommended by the United Kingdom National Screening Committee as an acceptable marker to detect Down’s syndrome.