Understanding Your Laboratory Test: A Patient Guide to Testing, Sample Collection, and Results

This test analyzes a sample taken from your body so your healthcare provider can check how well certain organs are working, screen for possible health problems, or monitor a condition you already have. Laboratory testing is a common, safe, and reliable way to gather important information about your overall health.

The Borrelia burgdorferi C6 Antibody test is a specialized blood test that looks for antibodies against the bacteria that cause Lyme disease in your cerebrospinal fluid (CSF). CSF is the clear fluid that surrounds and protects your brain and spinal cord. This test helps doctors determine if Lyme disease has affected your nervous system.

Your doctor may order this test if you have symptoms that need an explanation, as part of a routine checkup, to screen for a condition before symptoms appear, before a procedure, or to see how well a treatment is working over time. It can also be repeated to track changes in your health.

Your healthcare provider may order this test if you have symptoms suggesting neurological Lyme disease, such as severe headaches, facial drooping, numbness, tingling, or muscle weakness. This is particularly likely if you have been in an area where Lyme disease is common or if you remember being bitten by a tick.

The sample is usually collected from a vein in your arm with a small needle, through a quick finger stick, or from a urine specimen, depending on what your provider has ordered. The collection typically takes only a few minutes, and most people can return to their normal activities right afterward.

A healthcare provider will perform a lumbar puncture (spinal tap) to collect a small sample of cerebrospinal fluid. This procedure involves inserting a thin needle into the lower back to withdraw fluid. The sample is then sent to a laboratory for analysis.

Your results show whether your values fall within the normal reference range for this test. A result that is higher or lower than expected may point to a condition that needs further evaluation, but only your healthcare provider can interpret the numbers alongside your symptoms, medical history, and other test findings.

A positive result suggests that your immune system has produced antibodies against the Lyme disease bacteria and that the infection may have reached your nervous system. A negative result does not completely rule out Lyme disease, as antibodies may not be present in the early stages or the test may not detect all cases. Your doctor will interpret the results along with your symptoms, medical history, and other test results.