For suspected Multiple Sclerosis, which analyte changes would be observed?

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Multiple Choice

For suspected Multiple Sclerosis, which analyte changes would be observed?

Multiple sclerosis involves inflammation inside the central nervous system that disrupts the blood-brain barrier. This leads to more protein and immune components entering the CSF and often an increase in intrathecal IgG, which shows up as an elevated CSF marker (here labeled as POR). Creatine kinase is a muscle enzyme and is not used to diagnose MS; it is not expected to be elevated in this neurological condition. So, a pattern with a decreased CK and an increased CSF marker fits the inflammatory CSF changes seen in MS, making it the most plausible choice.

Multiple sclerosis involves inflammation inside the central nervous system that disrupts the blood-brain barrier. This leads to more protein and immune components entering the CSF and often an increase in intrathecal IgG, which shows up as an elevated CSF marker (here labeled as POR). Creatine kinase is a muscle enzyme and is not used to diagnose MS; it is not expected to be elevated in this neurological condition. So, a pattern with a decreased CK and an increased CSF marker fits the inflammatory CSF changes seen in MS, making it the most plausible choice.

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