First Trimester Antenatal Screen
(Risk to be calculated by requesting clinician)
Free β-hCG and PAPP-A in serum and sonographic determination of nuchal translucency (NT) are markers of choice to identify women at increased risk of Down Syndrome during the first trimester (week 11-13) of pregnancy.
No special instructions
Sample type guide
Gold Vacutainer, SST/Gel anticoagulant, 5ml
See the Sample Requirements page for an explanation of all the sample requirements.
See the Special Instructions Legend page for a full list of special instructions.