To ask Her Majesty's Government, further to the Written Answer by Earl Howe on 11 June (WA 170-2), how many women whose pregnancies registered as high risk following a biochemical serum screening went on to have one of the available diagnostic tests in each year for which records are available.
To ask Her Majesty's Government how many pre-natal diagnostic tests for disability were carried out in each year for which records are available, and how many of those tests returned negative results, according to whether they were an alpha-feto protein test, a chorionic vilius sampling test, an amniocentesis or a cordocentesis.
The department does not collect these figures centrally. The Association of Clinical Cytogenetics collects data on the number of invasive procedures undertaken following a positive Down's syndrome screening result on behalf of the NHS Fetal Anomaly Screening Programme. Figures for the number of women receiving a screen positive result and the number of diagnostic procedures undertaken are provided in the following table.
Test results for those women referred for prenatal diagnosis is not collected.
|Screen Positive||Amniocentesis||Chorionic villus sampling||Total|