Skip to main content
Go to homepage

Print Page

Prenatal Test: Multiple Marker Test

What Is the Multiple Marker Test?

The multiple marker test is a blood test offered to all pregnant women. Doctors use it to screen for chromosomal disorders and neural tube defects.

Test results can be combined with first trimester screening tests to give more accurate results (this is called an integrated screening test).

It is important to remember that this is a screening test, not a diagnostic test. If the test shows there might be a problem, another test must be done to confirm or rule out a diagnosis.

Why Is the Multiple Marker Test Done?

The multiple marker test is done between weeks 15 and 20 of a woman's pregnancy to screen for neural tube defects (such as spina bifida) and chromosomal disorders (such as Down syndrome and trisomy 18).

Depending on the number of things measured, the test also is called:

  • a "triple screen" or "triple marker" because it looks at the levels of a protein, alpha-fetoprotein (AFP), and two pregnancy hormones, estriol and human chorionic gonadotropin (hCG)
  • a "quadruple screen" ("quad screen") or "quadruple marker" ("quad marker") when the level of another substance — inhibin-A — is also measured

This screening calculates a woman's individual risk based on the levels of the three (or more) substances, as well as:

  • her age
  • her weight
  • her race
  • whether she has diabetes requiring insulin treatment
  • whether she is carrying one fetus or more than one

The greater number of markers increases the accuracy of the multiple marker test and better identifies the possibility of a problem. In some cases, doctors will combine the results of this test with results from the first trimester screen to get an even better idea of a baby's risk for Down syndrome and neural tube defects.

Should I Have the Multiple Marker Test?

All pregnant women are offered some form of this test. Some health care providers include more parts of it than others.

Remember that this is a screening test, not a diagnostic test. It's also not foolproof — a problem might not be detected, and some women with abnormal levels are found to be carrying a healthy baby. Further testing is recommended to confirm a positive result.

When Is the Multiple Marker Test Done?

The blood tests are typically done between 15 and 20 weeks.

What Happens During the Multiple Marker Test?

Blood is drawn from the mother.

When Are the Results Available?

Test results usually are ready within a week, but can take up to 2 weeks.

Reviewed by: Armando Fuentes, MD
Date Reviewed: Aug 2, 2018

Lea este articulo en Español

What next?

Summit Mall Play Area
Answer Key:
Click to expand
There are 10 nurses in the picture.

And we have many more pediatric primary care providers in Northeast Ohio. You can meet some of them here.
Summit Mall Play Area
Answer Key:
Click to expand
The five differences are:
– Phone color
– Coat pocket
– Stethoscope earpiece color
– Stethoscope bell dot
– Clipboard paper color

Need help finding a doctor, choosing a location or getting a general question about Akron Children's answered? Call us or fill out the form and we'll help in any way we can.
Summit Mall Play Area
Answer Key:
Click to expand
The two matching doctors are 9 and 14.

With virtual visits, you can see our pediatric experts from the comfort of home or wherever you are.
Summit Mall Play Area
Answer Key:
Click to expand
The correct path:
The Correct Path
We offer many ways to get pediatric care all over Northeast Ohio. Use this page to find the right kind of care and the most convenient location for you.