Measles (Rubeola) Virus IgG Antibody Test
Measles (Rubeola) Virus IgG Antibody Test
Measles is a contagious viral infection that primarily affects unvaccinated young children. While the infection in most cases resolves within several days, in some cases, it causes serious complications and even death. Vaccination is the preferred way to prevent getting sick with measles or spreading it to others.
The measles IgG antibodies test is a blood test that detects the presence of immunoglobulin class G (IgG) antibodies that develop in response to the infection with the measles virus. This test determines the serological status of a person, with a positive reaction usually indicating immunity to the virus due to previous exposure or vaccination.
IgG antibodies develop later during the measles infection and persist for life. The main purpose of these antibodies is to protect you from future infections.
What is the Measles IgG Antibody Test Used For?
To determine whether or not a person is immune to measles virus following previous infection or vaccination
To confirm measles in individuals who have suspected symptoms or have been exposed to people with active infections
To diagnose measles in pregnant woman as part of prenatal screening
To find the source of measles during occasional outbreaks (epidemics) and stop the spreading of disease
Symptoms of Measles
Symptoms of measles appear 10-14 days after viral exposure and typically include one or more of the following
High temperature
Sore throat and cough
Runny or blocked nose
Red, watery eyes
• Rash on the skin (appears first on the face before spreading across the body)
Small white spot inside the mouth
Preparation for Test
No specific preparation is required to evaluate measles IgG antibodies in the blood.
Interpretation of Test Results
The results of the Measles IgG antibody test are given and interpreted as follows:
Positive result
This report indicates the presence of detectable IgG antibodies and suggests immunization or past or current infection with the measles virus.
Negative result
The report indicates the lack of detectable IgG antibodies, suggesting no previous exposure or immunization against the measles virus.
Equivocal results
You may get this result if you have recently been vaccinated. Repeat testing after 10-14 days is suggested to demonstrate IgG seroconversion.
FAQs
How is the Measles IgG antibody blood test performed?
The test involves standard blood drawn from a vein in your arm using a needle, which is then sent to the lab for analysis.
Can I take this test during pregnancy?
Yes, you can. In fact, measles IgG serology is used as part of prenatal screening to check if a pregnant person is immune to measles.
Does this test pose any risk?
Like any other blood test, the use of needles during the test carries some risks, such as bruising, bleeding, and infection at the puncture site. You may also feel mild sting or pain; however, most symptoms go away in a few hours.
Is it possible to get measles after vaccination?
In some instances, it is possible. However, if you develop a measles infection, it is mild and less likely to spread to others.
What is the best way to prevent measles?
Immunizing with MMR (Measles, Mumps, and Rubella) vaccine is the best way to protect yourself or your child against measles. Given two doses at least 4 weeks apart, the vaccine can protect 99% of people against the virus. However, vaccination is not advisable during pregnancy.
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