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What is this test?

The Sporothrix schenckii antibody test is a laboratory test that detects whether your immune system has produced antibodies against the fungus Sporothrix schenckii in your cerebrospinal fluid (CSF). CSF is the clear fluid that surrounds and cushions your brain and spinal cord. This test helps doctors determine if a fungal infection has spread to your central nervous system, which could cause conditions like fungal meningitis.

Why might I need this test?

Your doctor may order this test if you have symptoms of meningitis (such as severe headache, stiff neck, fever, or confusion) and there is concern that a fungal infection may be the cause. This is more likely if you have a weakened immune system, a history of skin sporotrichosis, or have been exposed to contaminated soil or plants (since Sporothrix schenckii is commonly found in rose thorns, hay, and soil).

How is the sample collected?

The test requires a sample of cerebrospinal fluid, which is collected through a procedure called a lumbar puncture or spinal tap. During this procedure, a healthcare provider inserts a thin needle between the bones in your lower spine to withdraw a small amount of CSF. The area is numbed first to minimize discomfort.

What do the results mean?

A positive result indicates that antibodies against Sporothrix schenckii were detected in your CSF, suggesting that you have a fungal infection of the central nervous system. A negative result means no antibodies were detected, but this does not completely rule out infection. Your doctor will interpret these results together with your symptoms, other test results, and clinical history.