What Is a Triple Marker Screen Test?
The triple marker screen test analyzes how likely an unborn
baby is to have certain genetic disorders. It is also known as a multiple
marker test. The exam measures the levels of three important substances in the
placenta: alpha-fetoprotein (AFP), human chorionic gonadotropin (HCG), and
Triple marker screening is administered as a blood test for
women who are between 15 and 20 weeks pregnant. An alternative to this test is
the quadruple marker screen test, which also looks at inhibin A.
What Does a Triple Marker Screen Test Do?
A triple marker screen test takes a sample of blood and
detects the levels of AFP, HCG, and estroil in it. Abnormal levels of these
substances may indicate the presence of:
- Down syndrome
- Edwards syndrome
- neural tube defects (such as spina bifida and
- multiple infants
- an improper timeline (the pregnancy is further
along or not as far along as once thought)
Who Benefits from Triple Marker
Triple marker screen tests help
prospective parents prepare and assess options. They can also indicate multiple
Triple marker screen tests also alert
doctors to watch a fetus more closely for other signs of complications.
What Are the Side Effects of a Triple Marker Screen Test?
There are no side effects for triple marker screen tests.
Patients may experience slight discomfort due to the needle used to take blood,
but that fades quickly.
How Is a Triple Marker Screen Test Administered?
The triple marker screen test is administrated in a
hospital, clinic, doctor's office, or lab. The process is similar to any other
A doctor, nurse, or lab technician cleans the patch of skin
where the needle will be inserted. A rubber band or other tightening device is
placed on the arm to make a vein more accessible. The professional then inserts
the needle to draw blood and removes it when the vial is full.
The site of injection is cleaned with a cotton swab or other
absorbent material, and a bandage is placed on the wound.
The blood is then sent to a lab for assessment.
What Are the Benefits of a Triple Marker Screen Test?
A triple marker screen test can indicate potential
complications with a pregnancy, as well as the presence of multiple fetuses.
This helps parents prepare for birth. If all the test results are normal, parents
know that they are less likely to have a child with a genetic disorder.
What Are the Risks of a Triple Marker Screen Test?
There are no risks associated with taking the triple marker
How Does a Patient Prepare for a Triple Marker Screen Test?
Patients do not need to prepare for a triple marker screen
test. There are no eating or drinking requirements beforehand.
What Are the Results of a Triple Marker Screen Test?
The results of the triple marker screen test show the
likelihood of an infant having a genetic disorder such as Down syndrome or
spina bifida. Test results are not infallible. They merely show a probability.