A  A  A   Print
Rubeola Antibody (Blood)Anticuerpo contra la rubéola (en sangre)

Rubeola Antibody (Blood)

Does this test have other names?

Test for measles-specific IgM antibody

What is this test?

This test looks for an antibody called measles-specific IgM in your blood. If you have been exposed to the rubeola virus, your body may have made this antibody. The rubeola virus causes measles, an extremely contagious disease. It is spread through the air in droplets after people cough or sneeze.

Thirty percent of people who catch the measles have complications, including pneumonia, diarrhea, and ear infections that may cause permanent hearing loss. In rare cases, children may develop encephalitis. This is a brain infection that can cause intellectual disability and deafness.

Because so many children in the U.S. are now vaccinated against the measles, the disease is much less common than it was in the past. Most cases in the U.S. are among people who have brought the disease from other countries and spread it to others who are unvaccinated.

Why do I need this test?

You may need this test if you have been exposed to measles and have not previously been vaccinated against the disease. If you are infected with the measles virus, you may not develop symptoms for two weeks.

You may also need this test if you have symptoms of measles, including:

  • Rash that starts at the hairline and spreads down the face

  • Fever that gradually climbs to 103 degrees or higher

  • Cough

  • Pinkeye, or conjunctivitis

  • Runny nose

  • Diarrhea

What other tests might I have along with this test?

Your doctor may also order tests for mumps or German measles, also called rubella.

What do my test results mean?

Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your health care provider.

Normal results are negative, meaning you don't have the measles-specific IgM antibody in your blood. A positive result means the antibodies have been found and it's likely you have a measles infection.

Levels of measles-specific IgM antibody in your blood will rise shortly after the rash becomes visible. It may be necessary to repeat the test several days after the rash begins.

What might affect my test results?

Timing is important for this test. Your body may not create much IgM antibody at the beginning of the infection, which would give a false-negative result. You may need to have the test again after the rash has been visible for several days. If you've recently been vaccinated against the measles, your IgM antibody level might be higher, giving a false-positive.

How is this test done?

The test requires a blood sample, which is drawn through a needle from a vein in your arm.

Does this test pose any risks?

Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.

How do I get ready for this test?

You don't need to prepare for this test. But be sure your doctor knows about all medicines, herbs, vitamins, and supplements you are taking. This includes medicines that don't need a prescription and any illicit drugs you may use.

 

 
Today's Interactive Tools
Related Items

The third-party content provided in the Health Library of phoebeputney.com is for informational purposes only and is not designed to diagnose or treat a health problem or disease, or replace the professional medical advice you receive from your physician. If you or your child has or suspect you may have a health problem, please consult your primary care physician. If you or your child may have a medical emergency, call your doctor or 911 or other emergency health care provider immediately in the United States or the appropriate health agency of your country. For more information regarding site usage, please visit: Privacy Information, Terms of Use or Disclaimer.

Follow us online:

© 2014 Phoebe Putney Health System  |  417 Third Avenue, Albany, Georgia 31701  |  Telephone 877.312.1167

Phoebe Putney Health System is a network of hospitals, family medicine clinics, rehab facilities, auxiliary services, and medical education training facilities. Founded in 1911,
Phoebe Putney Memorial Hospital (the flagship hospital) is one of Georgia's largest comprehensive regional medical centers. From the beginning, Phoebe's mission and vision
has been to bring the finest medical talent and technology to the citizens of Southwest Georgia, and to serve all citizens of the community regardless of ability to pay.