<prompt> Compared to plasma, the CSF has a higher concentration of:CaNaChlorideGlucose  <response>: Substance CSF concentration CSF: plasma ratio Na K Ca Chloride Mg Bicarbonate Protein Glucose 147 meqL 2.9 meqL 2.3 meqL 113 meqL 2.2 meqL 25.1 meqL 20 mg 64 mg 0.98 0.62 0.49 1.14 1.39 1.01 0.003 0.64 