Quick highlights
- First-trimester maternal serum screening test
- Typically measures free β-hCG and PAPP-A
- Risk calculation integrates maternal age, gestational age, and often NT scan
- Screening test—not diagnostic; confirms require further tests
- Accurate gestational dating is essential for reliable risk estimation
- Often used as part of combined first-trimester screening
- Home blood collection may be possible; NT scan must be done at imaging center
- Clear counseling guidance for next steps (NIPT/CVS/amnio) when indicated
- No fasting typically required unless clinic specifies
- SEO coverage: dual marker test, first trimester screening test, PAPP-A free beta hCG
What’s included
Preparation
- Confirm gestational age with your obstetrician
- Schedule blood draw within the recommended gestational window
- Carry prescription and prior ultrasound/NT details if available
- No fasting unless your clinic instructs otherwise
- Provide accurate maternal details (age, weight, medical history) as requested
- Collect serum sample via trained phlebotomist
- Upload/submit NT scan details if part of calculation
- Download report from <a href='/my-account/'>View reports</a> and review with obstetrician
FAQs
A first-trimester maternal serum screening measuring typically free β-hCG and PAPP-A to estimate chromosomal risk.
No. It is a screening test; abnormal risk results need further evaluation.
In the first trimester within clinician-recommended gestational windows; your obstetrician will advise exact timing.
Usually no, unless your clinic specifies otherwise.
Dual marker plus NT ultrasound and maternal factors to calculate risk.
It means increased screening risk; it does not confirm a condition. Your obstetrician will advise next tests.
NIPT (screening) or CVS/amniocentesis (diagnostic) depending on counseling and gestational age.
Blood draw may be possible at home in many areas; ultrasound NT must be done at a scan center.
Gestational age accuracy, maternal age, weight, diabetes status, and NT measurement when included.
Often same day or within 24 hours depending on processing.
No; it is focused on risk for certain chromosomal conditions.
Your obstetrician may suggest alternative screening like NIPT or second-trimester tests.
Download from <a href='/my-account/'>View reports</a>.
No. Discuss calmly with your obstetrician; confirmatory pathways exist.
Notes
Screening tests estimate risk, not diagnosis.
