Bartonella FISH

Ordering the Bartonella FISH Test

Bartonella FISH is a laboratory test that detects Bartonella bacteria, including Bartonella henselae and Bartonella quintana, in blood samples. This test is often used when symptoms such as persistent fever, swollen lymph nodes, or unexplained fatigue are present, especially in people with a history of tick or flea exposure. Interestingly, Bartonella infections can sometimes cause eye inflammation or skin lesions that are not always linked to common infections, making this test helpful for identifying less obvious cases.

Ordering the Bartonella FISH test provides several specific benefits:

• Direct detection of Bartonella bacteria in the blood, even when antibody tests are negative.
• Helps clarify the cause of symptoms that overlap with Lyme disease or other vector-borne infections.
• Supports targeted treatment decisions by confirming active infection.
• Assists in monitoring persistent or recurring symptoms that have not responded to standard care.
• Reduces the risk of misdiagnosis by identifying coinfections that may complicate recovery.

Who Should Consider Bartonella Testing

People who have experienced ongoing joint pain, muscle aches, or neurological symptoms after spending time in areas with ticks or fleas may benefit from this test. For example, someone who has been treated for Lyme disease but continues to have headaches, fatigue, or unexplained rashes could use this test to check for a Bartonella coinfection.

Ordering this test may also be helpful in these situations:

• Unexplained fever and swollen lymph nodes after contact with cats or other animals.
• Persistent skin lesions or rashes that do not improve with standard treatments.
• Eye inflammation or vision changes without a clear cause.
• Heart problems, such as endocarditis, in people with a history of animal bites or scratches.
• Unusual liver or spleen enlargement found during routine imaging, which can sometimes be linked to Bartonella infection.

Testing for Bartonella can help pinpoint the reason for ongoing symptoms, guide more effective treatment, and prevent unnecessary delays in care. Waiting to order this test may allow the infection to persist, making symptoms harder to resolve and potentially leading to more complex health issues.

Preparing for Bartonella FISH and Related Testing

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 FISH Test

Reference ranges may change slightly as laboratories update their methods and standards.

Bartonella FISH FAQ

Is there Bartonella FISH testing near me?

This is a test kit that can be collected at a local draw site, making it easier for people with ongoing symptoms like fatigue or joint pain to access testing without traveling far. Check the draw location link at the top of the page for convenient 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 with our clinical team for a detailed explanation and next steps.

What is the cost of the test?

The price listed for the test includes standard shipping to you and return shipping to the lab, though draw fees may apply. Ordering this test can help identify a Bartonella infection early, which may speed up recovery and reduce ongoing symptoms.

How often should I retest?

Retesting is usually recommended every 3 to 6 months if symptoms continue or after treatment to confirm the infection has cleared. Regular retesting helps track progress and ensures that any persistent infection is addressed promptly.

How accurate is the test?

Bartonella FISH uses a fluorescent in situ hybridization method to directly detect Bartonella bacteria in blood samples, with a specificity of 99% and a sensitivity of 85%. TrueHealthLabs.com partners with CLIA-certified and CAP-certified laboratories to uphold rigorous testing standards for dependable results.

Important Notes

None.