In suspected meningitis, which fluid would be examined to detect protein changes?

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Multiple Choice

In suspected meningitis, which fluid would be examined to detect protein changes?

Protein changes in suspected meningitis are best detected in the fluid that directly surrounds the brain and spinal cord. Cerebrospinal fluid is obtained to measure its protein concentration because inflammation of the meninges and increased permeability of the blood–brain barrier cause proteins to accumulate in this fluid. As a result, CSF protein levels rise in meningitis, which helps confirm CNS involvement and, in combination with cell counts and glucose, helps differentiate bacterial from viral causes. Blood serum reflects systemic protein status but not the specific changes occurring in the central nervous system, and urine or sweat do not provide information about CNS inflammation.

Protein changes in suspected meningitis are best detected in the fluid that directly surrounds the brain and spinal cord. Cerebrospinal fluid is obtained to measure its protein concentration because inflammation of the meninges and increased permeability of the blood–brain barrier cause proteins to accumulate in this fluid. As a result, CSF protein levels rise in meningitis, which helps confirm CNS involvement and, in combination with cell counts and glucose, helps differentiate bacterial from viral causes. Blood serum reflects systemic protein status but not the specific changes occurring in the central nervous system, and urine or sweat do not provide information about CNS inflammation.

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