Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 54

A patient with a blood glucose of 120 mg/dL would have a normal CSF glucose of:

A. 20 mg/dL

B. 60 mg/dL

C. 80 mg/dL

D. 120 mg/dL

Step 1 of 2

Cerebrospinal fluid (CSF) glucose:

• Glucose enters into CSF through selective transport in blood-brain barrier

• Reference value for glucose present in CSF is approximately 65 mg/dL

• Hence, when blood glucose of 120 mg/dL, normal CSF glucose will be 60 mg/dL

Therefore, the patient will have“60mg/dL” of normal glucose in CSF when blood glucose level is 120 mg/dL. Hence, the correct answer is option.