Glucose – CSF / Glucose: Plasma Glucose ratio

Sample type	Blood & CSF
Container	Fluoride	Click image to enlarge ×
Sample volume	0.5 mL CSF 1.3 mL blood
Turnaround time	2 hr
Hospital	CHI at Temple Street
Telephone number	01 878 4272
Laboratory	Biochemistry
Special precautions / Clinical Comment	Send to lab ASAP. Blood for plasma glucose should be taken at the same time, prior to lumbar puncture. State time of collection. Patients should be fasting 4-6 hours. Avoid sedation with chloral hydrate. Avoid giving sugary drinks/sweets etc as will falsely lower CSF/plasma glucose ratio.
Documents