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Dual Marker

Parameters1 tested
SampleBlood
FastingNot required
Report in24-48 hrs

How to prepare

No fasting needed

You can eat and drink normally before the test.

Good to know

No special preparation needed.

Medicines

Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.

Comfortable clothes

Wear a loose sleeve so the sample can be taken easily from your arm.

How it works

Book onlinePick a time slot
Home visitSealed, sterile kit
Lab testingBarcode tracked
ReportIn 24-48 hrs

About this test

The dual marker test is a first-trimester screening blood test done between 11 and 13+6 weeks of pregnancy. It measures free beta-hCG and PAPP-A and, with the NT scan, estimates the risk of Down syndrome and some other chromosomal conditions.

Why is this test done?

  • Screen the baby for Down syndrome, Edwards and Patau syndromes
  • Decide whether further testing (NIPT or amniocentesis) is needed

Symptoms — when should you get tested?

  • Routine screening in every pregnancy
  • Mother aged 35 or above
  • Previous baby with a chromosomal problem

Normal range

Risk Screen negative (low risk)

Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.

If your result is high

A "screen positive" (high-risk) result does not mean the baby has a problem; it means further tests are advised.

Common reasons
  • Higher chance of Down syndrome (trisomy 21)
  • Higher chance of trisomy 18 or 13

How is the test done?

  1. 1
    Book online

    Choose your slot for home collection or a visit to our centre.

  2. 2
    Blood sample taken

    A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.

  3. 3
    Tested in our lab

    Your barcoded sample is tested on automated machines with strict quality checks.

  4. 4
    Report on WhatsApp

    A pathologist checks the result and the report reaches you on WhatsApp and email.

Frequently asked questions

Between 11 and 13 weeks 6 days, ideally on the same day as the NT scan.

No, it only estimates risk.

No fasting is needed for this test. You can eat and drink normally.

Your report is usually ready in 24-48 hrs after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.

Please call our team to confirm whether home sample collection is available for your location and test.

This test needs a blood sample. No special preparation needed.

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