CSF, Glucose
Also known as: CSF GLU
Use
The CSF glucose test is used to measure the glucose concentration in cerebrospinal fluid (CSF). It is an important diagnostic tool in the evaluation of disorders affecting the central nervous system. Low glucose levels in the CSF can indicate infections like bacterial meningitis or other conditions causing increased glucose consumption in the brain. It can help in the differential diagnosis of meningitis and other neurological disorders.
Special Instructions
CSF specimens are to be collected following standard lumbar puncture procedures to ensure accurate measurement. Specimens should be processed promptly to prevent degradation. Use ARUP standard transport tubes for specimen transfer.
Limitations
The CSF glucose test has limitations, including potential variability due to blood glucose levels and other metabolic factors. Hemolysis of the specimen may impact results. Interfering substances or improper handling can lead to inaccurate measurements. Conditions such as diabetes or systemic infection can influence CSF glucose levels. Accurate interpretation must consider these factors.
New York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 2342-4
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Cerebrospinal Fluid
Volume
1 mL
Minimum Volume
0.2 mL
Container
ARUP standard transport tube
Collection Instructions
Centrifuge to remove cellular material and transfer to a transport tube.
Patient Preparation
Follow standard lumbar puncture procedures for CSF collection.
Storage Instructions
Refrigerated
Causes for Rejection
Specimen types other than those listed.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 5 hours |
| Refrigerated | 1 month |
| Frozen | 1 month |