h-hCG (hyperglycosylated hCG); PAPP-A (Pregnancy-associated Plasma Protein); risk calculation which includes NT (Nuchal Translucency)
To screen for Down syndrome and trisomy 18 at 9.0-13.9 weeks gestation
1.5 mL Serum from a Red Top Tube in a Plastic Vial
7 days Ambient
7 days Refrigerated
60 days Frozen
The Informational Form MUST be filled out completely and submitted with specimen
0.8 mL
| MSS Down Syndrome Risk | <1:270 |
| MSS Risk for Trisomy 18 Risk | <1:100 |
This test was developed and its performance characteristics have been determined by Quest Diagnostics. Performance characteristics refer to the analytical performance of the test.
To screen for Down syndrome and trisomy 18 at 9.0-13.9 weeks gestation
Limitations: First Trimester Screen results consistent with increased risk of trisomy should be confirmed with CVS or amniotic fluid specimen. Maternal serum screening yields a low percentage of false negatives. A wide range of other chromosomal abnormalities are not identified by maternal serum screening
Research Test Only
3 to 5 days
00913333
84163, 82397