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Test Code SFGLU Glucose Spinal Fluid (CSF) LAB185

Test Method

Timed Endpoint; Beckman DXC600


Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after
the specimen arrives at the testing site.

Expedite: Typically completed within 1 hour after the
specimen arrives at the testing site.

STAT: Typically completed within 30 minutes after the specimen
arrives at the testing site.

Useful For

Investigating possible central nervous system infection

Specimen Requirement

0.5 mL spinal fluid is required.

CPT Code Information

82947 Chemistry: Glucose, quantitative, blood (except reagent

Reference Values

< 1 Month: Reference values not established. Results are
subject to interpretation by the clinician.

> 1 Month to Adult: 40-75 mg/dL

  • Critical value: <40 mg/dL

LOINC Code Information

2342-4 Glucose [Mass/Volume] In Cerebral Spinal Fluid

Additional Specimen Collection Information

Spinal fluid collected by a physician in a sterile containe.
Label the specimen appropriately with two identifiers, patient name
and another identifier, (patient ID number, DOB, etc.) include date
and time of collection. Transport the specimen to the laboratory
immediately after collection.

Centrifuge prior to analysis.