CSF Glucose level

[Tim__0]

  I was recently reading my emergency room report after I experienced a general tonic-clonic seizure.
  The report indicated that the lumbar puncture results indicated everything was within normal limits,
  except for glucose.  My doctor never mentioned this to me, so I'm wondering if this is important?
  Can an abnormal glucose level indicate a condition that can cause a first seizure like this in
  an adult? To my knowledge I don't have any problem with my glucose, although my grandfather had
  diabetes. Thank you.
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The CSF glucose is a reflection usually of the blood glucose. You did not
say if it was high or low, however the CSF glucose tends to be high in
people who have high blood sugar due to diabetes, and if the blood sugar
is low in a person who is fasting the CSF glucose also tends to be low.
One reason for CSF sugar to be abnormally low in the presence of normal
blood sugar is in bacterial meningitis. In this case the sugar is being
consumed by bacteria in the CSF, however the white blood cell count in
the CSF would also be elevated in this case and the protein would be high,
In the absence of these two accompanying findings meningitis is not likely.
An isolated abnormal CSF glucose therefore is likely to be a reflection
of the blood sudgar levels, and on it own has little significance.