Ordering the Babesia microti IgG and IgM Antibody Test
Babesia microti IgG and IgM Antibody testing helps detect antibodies that form in response to infection with the Babesia microti parasite, which is spread by tick bites. This test is often used to help identify recent or past exposure, especially in people with symptoms like fever, chills, fatigue, or unexplained anemia. Interestingly, Babesia microti infection can sometimes occur alongside Lyme disease, making it important to check for both if symptoms overlap.
Ordering this test can provide specific answers about possible Babesia infection, especially if you have symptoms that are not explained by other causes. When you order this test, you can expect:
- Detection of both early (IgM) and later (IgG) immune responses to Babesia microti
- Support for diagnosis when symptoms are unclear or overlap with other tick-borne illnesses
- Guidance for your doctor to choose the right treatment plan
- Information to help prevent complications from untreated infection
- Results that can be used to monitor response to treatment over time
Who Should Consider Babesia Antibody Screening
People who have spent time in wooded or grassy areas where ticks are common and later develop symptoms like fever, chills, or unexplained tiredness may benefit from this test. For example, someone who enjoys hiking in the Northeast and later develops joint pain and night sweats might want to check for Babesia infection, especially if Lyme disease has already been ruled out.
Ordering this test may also be helpful in these situations:
- After a known tick bite followed by flu-like symptoms
- When symptoms of anemia, such as weakness or pale skin, appear without a clear cause
- If you have a history of Lyme disease and new symptoms develop
- For people with a weakened immune system who are at higher risk for severe infection
- In cases where unexplained jaundice appears after outdoor activities in tick-prone areas
This test can help confirm if your symptoms are due to Babesia microti, which can guide your doctor in choosing the right treatment and prevent delays in care. Waiting to order this test could mean missing the best window for early detection, which may make treatment more complicated later on.
Preparing for Tick-Borne Parasite Antibody Testing
Fasting is not required for the Babesia microti IgG and IgM Antibody test, so you can eat and drink as usual before your sample is collected. Always follow any instructions your doctor or healthcare provider gives you to make sure your sample is collected correctly and your results are as helpful as possible.
Labs Included When Ordering Your Babesia microti IgG and IgM Antibody Test
| Test Name | Reference Range | What This Biomarker Means | Low and High Levels of Babesia microti IgG and IgM Antibody |
|---|---|---|---|
| Babesia microti IgG Antibody | Negative: <1:256 Equivocal: 1:256 Positive: >1:256 |
Babesia microti IgG antibodies show if your immune system has responded to the parasite in the past or over a longer period. This marker helps identify previous or ongoing infection, even if symptoms are mild or delayed. |
High levels mean your body has likely been exposed to Babesia microti in the past or has a current infection.
Low levels mean there is little or no evidence of past exposure to Babesia microti. |
| Babesia microti IgM Antibody | Negative: <1:20 Equivocal: 1:20 Positive: >1:20 |
Babesia microti IgM antibodies are usually present in the early stages of infection, showing a recent or active response to the parasite. This marker is useful for detecting new or ongoing infection. |
High levels mean there may be a recent or current Babesia microti infection.
Low levels mean there is no sign of a recent immune response to Babesia microti. |
Reference ranges may change slightly over time as labs update their methods and guidelines. Always check your report for the most current reference values.
Babesia microti IgG and IgM Antibody FAQ
Is there Babesia microti IgG and IgM Antibody testing near me?
This test is available as a kit that you can use for sample collection at a local draw site—see the draw location link at the top of the page. Since Babesia infection can cause symptoms like fatigue and fever, having a nearby collection option makes it easier to get tested quickly and start the right treatment if needed.
How do I interpret the test results?
While your doctor should review your results, you can also use our one-on-one test results review service with our clinical team for a detailed explanation and next steps.
What is the cost of the test?
The price you see includes standard shipping to you and return shipping to the lab, but draw fees may apply at the collection site. Ordering this test can help you find out if Babesia infection is causing your symptoms, which can help you get the right treatment sooner.
How often should I retest?
Retesting is usually recommended 2-4 weeks after the first test if symptoms continue or if your doctor wants to monitor your response to treatment. Repeating the test can help track changes in antibody levels and confirm if the infection is resolving.
How accurate is the test?
This test uses an immunofluorescence assay (IFA) method, which is highly specific for Babesia microti antibodies. The sensitivity is about 88% and specificity is about 96%. TrueHealthLabs.com partners with CLIA-certified and CAP-certified laboratories to uphold rigorous testing standards for dependable results.
Medical Review Board
Reviewed by Jeff Donohue M.D. from Body Logic and Brady Hurst DC, CCCN. Written by True Health Lab’s team of editorial health contributors.
Disclaimer: This information is for educational purposes only and not intended as medical advice. Consult your healthcare provider for personalized guidance.
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