The free foetal DNA test is used to determine the foetal Rh(D) type of pregnant Rh(D) Negative women who have not made immune anti-D and require the test to determine their need for antenatal anti-D prophylaxis.
Tube
EDTA (Crossmatch)
ID
12704
Availability
As required
Additional Information
Usual transfusion sampling/labelling policies apply but the request form must also include the date of venepuncture and the EDD (by scan). A minimum of 6 ml EDTA is required.
Collection Con
Sample NOT to be taken prior to 12 weeks gestation (usually taken at 16 week appointment).
Frequency
As required
IP Acute TAT
14 days
IP Routine TAT
14 days
GP Acute TAT
14 days
GP Routine TAT
14 days