Rubella Infection Blood Test

What is Rubella Infection?

Rubella infection, also known as German measles, is a contagious viral illness caused by the rubella virus that can cause serious birth defects during pregnancy. It is caused by the rubella virus, which spreads through respiratory droplets when infected people cough or sneeze. The Rubella Immune Status test is the most important test for diagnosis because it measures IgG antibodies that indicate immunity from past infection or vaccination.

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What causes rubella infection?

Rubella infection is caused by the rubella virus, a single-stranded RNA virus from the Togaviridae family. The virus spreads through respiratory droplets when an infected person coughs, sneezes, or talks, and can also be transmitted from a pregnant woman to her developing baby through the bloodstream. The rubella virus is highly contagious, and people are most infectious from about one week before the rash appears until about one week after it fades, though some people can spread the virus without ever showing symptoms.

What is the best test for rubella infection?

The Rubella Immune Status test is the most important test for rubella infection because it detects Rubella IgG antibodies in your blood that indicate whether you are immune to the virus. This blood test measures the level of IgG antibodies your immune system produces in response to the rubella virus, either from past infection or vaccination. High levels of Rubella IgG antibodies confirm immunity and show that you are protected from future rubella infection. Healthcare providers may also order IgM antibody tests alongside IgG testing to distinguish between recent and past infections, as IgM antibodies appear shortly after infection while IgG antibodies remain for life.

When should I get tested for rubella infection?

You should get tested if you are pregnant or planning to become pregnant, as rubella infection during pregnancy can cause serious birth defects in your baby. You should also get tested if you have been exposed to someone with rubella, if you develop a rash with fever and swollen lymph nodes, or if you work in healthcare or childcare and need to confirm your immunity status. Women of childbearing age who are unsure of their vaccination history should test their immunity before pregnancy to ensure protection.

What are the symptoms of rubella infection?
Rubella infection often causes a red or pink rash that starts on the face and spreads to the rest of the body, lasting about three days. You might notice a mild fever, swollen and tender lymph nodes (especially behind the ears and at the back of the neck), headache, runny nose, and red or inflamed eyes. Many people, especially children, have very mild symptoms or no symptoms at all, while adults may experience joint pain and stiffness that can last for several weeks after other symptoms disappear.
Who is at risk for rubella infection?
People who have never been vaccinated against rubella or have not had the infection previously are at highest risk. Unvaccinated pregnant women face the greatest danger because rubella infection during the first trimester can cause congenital rubella syndrome in their babies, leading to serious birth defects. International travelers visiting countries where rubella is still common, healthcare workers, and people working in schools or childcare settings also have increased exposure risk. Anyone born before 1957 is generally considered immune because rubella was so common before the vaccine became available.
What happens if rubella infection is left untreated?
Rubella infection in children and adults usually resolves on its own within a week without serious complications, though some adults may experience prolonged joint pain. The most devastating consequence occurs when a pregnant woman contracts rubella during the first trimester, which can cause congenital rubella syndrome in her baby, resulting in heart defects, cataracts, deafness, intellectual disabilities, and other serious birth defects. Rare complications in non-pregnant individuals include brain inflammation (encephalitis), bleeding problems due to low platelet counts, and ear infections. Early detection through blood testing is crucial for pregnant women to monitor fetal health and make informed medical decisions.
Can rubella infection be diagnosed with a blood test?
Rubella infection can be definitively diagnosed with a blood test that measures rubella antibodies in your bloodstream. The blood test detects both IgM antibodies, which appear during active or recent infection, and IgG antibodies, which indicate past infection or immunity from vaccination. This testing is more reliable than diagnosis based on symptoms alone because rubella symptoms are often mild and can be confused with other viral infections. Blood testing is especially important for pregnant women and anyone who has been exposed to rubella to confirm infection status and immunity.
How is rubella infection treated?
Rubella infection is treated with supportive care to relieve symptoms, as there is no specific antiviral medication that cures the virus. Treatment includes getting plenty of rest, staying hydrated, and taking acetaminophen to reduce fever and relieve discomfort (avoid aspirin in children due to the risk of Reye syndrome). Infected individuals should isolate themselves from others, especially pregnant women, for at least seven days after the rash appears to prevent spreading the virus. Pregnant women who contract rubella require close monitoring by their healthcare provider to assess potential effects on the developing baby.
How can I prevent rubella infection?
The MMR vaccine (measles, mumps, and rubella) is the most effective way to prevent rubella infection, providing immunity in about 97% of people who receive both recommended doses. Children should receive their first MMR dose at 12-15 months of age and the second dose at 4-6 years of age, while adults who have never been vaccinated should get two doses at least 28 days apart. Women who are not immune should get vaccinated at least one month before becoming pregnant, as the vaccine cannot be given during pregnancy. Avoiding close contact with infected individuals and practicing good hand hygiene also help reduce transmission risk.
What can I do at home for rubella infection?
At home, you can manage rubella symptoms by resting in a comfortable, quiet environment and drinking plenty of fluids to stay hydrated. Use a cool-mist humidifier to ease breathing and soothe irritated airways, and take acetaminophen as directed to reduce fever and relieve aches. Isolate yourself from others, especially pregnant women and unvaccinated individuals, to prevent spreading the virus, and avoid going to work, school, or public places for at least seven days after your rash appears. While these home measures help you feel more comfortable, they do not cure the infection, which must run its course naturally.
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Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
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Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

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If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Rubella Immune Status
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