Ordering the Bartonella henselae IgG and IgM Antibody Test
Testing for Bartonella henselae IgG and IgM antibodies helps identify both recent and past exposure to Bartonella bacteria, which are linked to conditions like cat scratch fever, chronic fatigue syndrome, and persistent neurological symptoms. This test is often used when symptoms such as swollen lymph nodes, unexplained fever, or joint pain are present, especially after contact with cats or ticks. Interestingly, Bartonella infections can sometimes cause eye problems or heart inflammation, which may not be immediately connected to the infection.
Ordering this test can help you:
- Detect both current and past Bartonella infections by measuring IgG and IgM antibodies.
- Support diagnosis of unexplained symptoms like fatigue, muscle pain, or skin lesions.
- Guide treatment decisions for persistent or recurring symptoms after pet or tick exposure.
- Monitor response to treatment in people with known Bartonella infection.
- Rule out Bartonella as a cause of symptoms that overlap with Lyme disease or other vector-borne illnesses.
Who Should Consider Bartonella Antibody Screening
People who have ongoing fatigue, headaches, or joint pain after being scratched by a cat or bitten by a tick may benefit from this test. For example, someone who has developed a rash and swollen lymph nodes weeks after adopting a new kitten might want to check for Bartonella infection, especially if symptoms are not improving.
Ordering this test may also be helpful in these situations:
- Unexplained fever and muscle aches after outdoor activities in tick-prone areas
- Eye inflammation or vision changes with no clear cause
- Heart valve problems in people with a history of animal exposure
- Persistent neurological symptoms, such as numbness or tingling, following a suspected insect bite
- People with chronic fatigue syndrome who have not responded to standard treatments, as Bartonella can sometimes be a hidden trigger
Testing for Bartonella antibodies can help pinpoint the cause of symptoms that overlap with other infections, allowing for targeted treatment and reducing the risk of ongoing complications. Delaying this test may allow the infection to persist, making symptoms harder to manage and potentially leading to more complex health issues.
Preparing for Bartonella Antibody Detection
Fasting is not required before this test, so you can eat and drink as usual. Always follow any instructions or special guidance provided by your doctor or healthcare provider to ensure the process goes smoothly.
Labs Included When Ordering Your Bartonella henselae IgG and IgM Antibody Test
| Test Name | Reference Range | Significance | Low and High Levels of Bartonella henselae IgG and IgM Antibody |
|---|---|---|---|
| Bartonella henselae IgG Antibody | Negative: <1:64 Equivocal: 1:64 Positive: >1:64 |
This marker shows if your immune system has produced IgG antibodies to Bartonella henselae, indicating past or ongoing infection. IgG levels help determine if you have been exposed to the bacteria before. |
High levels mean your body has responded to Bartonella henselae, suggesting a current or previous infection.
Low levels mean there is little or no evidence of past exposure to Bartonella henselae. |
| Bartonella henselae IgM Antibody | Negative: <1:20 Equivocal: 1:20 Positive: >1:20 |
This marker detects IgM antibodies, which are usually present during the early stages of Bartonella henselae infection. IgM levels help identify recent or active infection. |
High levels mean a recent or ongoing Bartonella henselae infection is likely.
Low levels mean there is no sign of a current or recent infection. |
| Bartonella duncani IgM Antibody | Negative: <1:20 Equivocal: 1:20 Positive: >1:20 |
This test checks for IgM antibodies to Bartonella duncani, another species that can cause similar symptoms. It helps identify infections that may not be detected by Bartonella henselae testing alone. |
High levels mean a recent or active Bartonella duncani infection is possible.
Low levels mean there is no evidence of a current or recent Bartonella duncani infection. |
Reference ranges may change slightly as labs update their methods and guidelines.
Bartonella henselae IgG and IgM Antibody FAQ
Is there Bartonella henselae IgG and IgM Antibody testing near me?
This test is provided as a kit that you can use at a local draw site, making it easier to get tested even if you have symptoms like fatigue or joint pain that make travel difficult. Check the draw location link at the top of the page for nearby collection options.
How do I interpret the test results?
While your treating physician should review your results, you can also use our one-on-one test results review service for a detailed explanation from our clinical team.
What is the cost of the test?
The price listed for this test includes standard shipping to you and return shipping to the lab, though draw fees may apply. Ordering this test can help you identify a hidden infection, which may speed up your recovery and guide your next steps.
How often should I retest?
Retesting is usually recommended 4-6 weeks after treatment or if symptoms return, as this helps track changes in antibody levels and ensures the infection has cleared.
How accurate is the test?
This test uses immunofluorescence assay (IFA) to detect Bartonella antibodies, with a sensitivity of 88% and specificity of 96%. TrueHealthLabs.com partners with CLIA-certified and CAP-certified laboratories to uphold rigorous testing standards for dependable results.
Important Notes
None.
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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