What is the normal CSF glucose value?

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Explore the Hemispheres 3.0 Level I Brain Anatomy and Physiology Test. Study with detailed questions, answers, and hints. Enhance your knowledge and boost your preparation for success!

Multiple Choice

What is the normal CSF glucose value?

Explanation:
CSF glucose tracks blood glucose but sits a bit lower because it diffuses into the CSF and is used by brain tissue. The normal value is about two-thirds of plasma glucose. So if blood glucose is around 90 mg/dL, CSF glucose is about 60 mg/dL; if blood glucose is around 120 mg/dL, CSF glucose is around 80 mg/dL. That makes the typical normal CSF glucose range roughly 45–80 mg/dL, which is captured by the option stating 45–80 mg/dL or 2/3 of blood glucose. The other ranges are not consistent with this relationship.

CSF glucose tracks blood glucose but sits a bit lower because it diffuses into the CSF and is used by brain tissue. The normal value is about two-thirds of plasma glucose. So if blood glucose is around 90 mg/dL, CSF glucose is about 60 mg/dL; if blood glucose is around 120 mg/dL, CSF glucose is around 80 mg/dL. That makes the typical normal CSF glucose range roughly 45–80 mg/dL, which is captured by the option stating 45–80 mg/dL or 2/3 of blood glucose. The other ranges are not consistent with this relationship.

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