About This Test
The Maternal Serum Screen 2, commonly called the Dual Test, is a first-trimester prenatal screening test performed between 10–13+6 weeks of pregnancy.
It measures two biochemical markers in the mother’s blood to estimate the risk of chromosomal abnormalities in the fetus. Mainly two markers are measured Free β-hCG (Free Beta Human Chorionic Gonadotropin) and PAPP-A (Pregnancy Associated Plasma Protein-A). These values are interpreted together with Maternal age, Gestational age, Ultrasound NT value (Nuchal Translucency thickness)
to generate risk estimates.
Test Parameters (1)
- MATERNAL SERUM SCREENING;DUAL TEST
Home Collection
✓ Available
Reports Available In
1 Day
Preparation / Prerequisite
Criteria for Double marker (Maternal serum screening.)
1. Gestational age 11 - 13 + 6 days
2. CRL 45 - 83 mm
3. At least one of these criteria to be followed of which CRL is more important.
4. Patient's NT NB report is must
5.If patient taken any tab or injection of HCG then sample to be given after 4-5 days of tab or injection.
Frequently Asked Questions
These tests measure things like blood sugar, liver function, kidney function, cholesterol, electrolytes.
No, Fasting is not required.
Sample before 11am on Wed, report same day.
Yes. We use fully automated machines that ensure accurate and consistent results.
Yes. Dual Marker testing can detect Early risk of Down syndrome, other aneuploidies, placental dysfunction.
TAT Policy
The Turnaround Time (TAT) depends on the following factors:
- Registration date and time
- Type of scan or test
- Scan time or sample collection time
In uncommon circumstances, TAT may be delayed due to test complexity or reasons beyond our control. You will be informed of the estimated TAT at the time of registration.
