Double Marker Test (First Trimester 8–13 Weeks, FMF Certified) in Guwahati
The Double Marker Test is an essential first-trimester prenatal screening performed between 8 and 13 weeks of pregnancy. This FMF-certified test evaluates two key maternal serum markers — PAPP-A and Free Beta hCG — to estimate the risk of chromosomal conditions like Down syndrome (Trisomy 21), Edwards syndrome (Trisomy 18), and Patau syndrome (Trisomy 13). It is a safe, non-invasive blood test and forms a core part of recommended early antenatal screening worldwide.
At Aarogyam Center Guwahati, we provide the Double Marker Test with home sample collection, rapid reporting through Thyrocare laboratories, and guidance to help expecting parents understand screening outcomes. This test is most effective when combined with NT Scan measurements (Nuchal Translucency) for FMF-certified risk calculation.
- PAPP-A (Pregnancy Associated Plasma Protein-A): Low levels may indicate increased risk for chromosomal abnormalities and placental complications.
- Free Beta hCG: Abnormal (high or low) levels may correlate with conditions such as Trisomy 21 or Trisomy 18.
These values are processed into MoM (Multiples of Median), and when combined with maternal age, NT measurement, gestational age and weight, they help calculate the likelihood of fetal chromosomal risk.
- All pregnant women between 8–13 weeks of gestation
- Women above the age of 30–35
- Mothers who conceived via IVF or assisted reproduction
- Those with a family history of genetic disorders
- Women advised by their gynecologist due to previous pregnancy concerns
- FMF-approved algorithms ensure globally standardised risk assessment.
- Helps early detection of chromosomal abnormalities.
- Non-invasive and completely safe for mother & baby.
- Guides whether further tests like NIPT or CVS/amniocentesis are required.
- Peace of mind for expecting parents via early reassurance.
- No fasting required; normal diet is fine.
- Provide accurate gestational age — preferably from early ultrasound.
- Record and share weight, age, and medical history for proper interpretation.
- If doing NT Scan, ensure the scan is FMF-certified for combined risk calculation.
- Relax — stress does not affect the biochemical results.
- Sample: Maternal venous blood
- Report Time: 24–48 hours
- Risk report: MoM values + estimated probability based on FMF standards
Double Marker is a screening test, not a diagnosis. Results include:
- MoM values for Free Beta hCG and PAPP-A
- Computed risk ratios (e.g., 1 in 800)
- Low-risk vs high-risk classification
High-risk results simply indicate the need for further testing such as NIPT or diagnostic procedures. A low-risk result reduces but does not eliminate the possibility of chromosomal conditions.
Aarogyam Center provides home collection throughout Guwahati — including Beltola, Ganeshguri, Bhangagarh, Maligaon, Dispur, VIP Road, Khanapara, Jalukbari, and more. Expecting mothers prefer early morning collections and our team accommodates these sensitive time windows.
Reports are FMF-algorithm compatible and accepted by all major maternity and prenatal clinics such as Apollo Clinic, Nemcare, GNRC, Hayat, and private gynecologist chambers in Guwahati.
- Gestational age must be accurate — outdated LMP-based dating may affect results.
- NT Scan enhances accuracy; ask your doctor to match both tests in the same week.
- Maternal weight, smoking, diabetes, and twin pregnancy can modify interpretation.
- If your doctor recommends NIPT instead, you may skip Double Marker.
