What is the normal reference range for CSF glucose in an adult?

The normal reference range for cerebrospinal fluid (CSF) glucose in an adult is typically around 2.1-4.2 mmol/L. This range is significant in assessing the metabolic state of the central nervous system and diagnosing various conditions, such as infections, inflammatory diseases, and neoplasms.

CSF glucose levels are usually compared to serum glucose levels to evaluate for issues like bacterial meningitis or other central nervous system infections, where CSF glucose may be low relative to serum levels. Understanding this reference range allows healthcare professionals to interpret CSF analysis accurately and make informed decisions based on the patient's condition.

The other ranges listed do not align with the established normal values for adult CSF glucose, highlighting the importance of using the correct reference when evaluating CSF findings in clinical practice.