Answer BOF 15

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BOF 15
You are reading a report of a cerebro-spinal fluid analysis, all are true, except:
1-the normal opening pressure of CSF is 50-180 mm/H2O
2-the glucose is usually 30% that of the blood level
3-the protein is usually up to 45 mg /dl
4-single neutrophil is abnormal
5-oligoclonal bands should be absent

Answer: 2
1-true..May be raised in many CNS diseases …however in many other diseases it might be normal even in the presence of profound CNS insult like NPH, MS..etc
2-false, usually 60-70% of the blood levels, levels below 50% are always abnormal
3-true above 50 mg /dl is abnormal
4-true, up to five cells is normal, all should be mononuclear
5-true, oligoclonal bands indicates intrathecal synthesis of IgG, and is seen in many CNS diseases (not only MS!!)

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