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HelpTest Code GLU CSF Glucose Cerebral Spinal Fluid
Additional Codes
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Cerner |
NextGen |
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Glucose CSF |
Glucose CSF |
Alternate Name(s)
Glucose Cerebral Spinal Fluid
Glucose CSF
Useful For
Glucose is a primary cellular energy source. Fasting plasma glucose concentrations and tolerance to a dose of glucose are used to establish the diagnosis of diabetes mellitus and disorders of carbohydrate metabolism. Glucose measurements are used to monitor therapy in diabetics and in patients with dehydration, coma, hypoglycemia, insulinoma, acidosis, and ketoacidosis.
Methodology
Colorimetric (reflectance spectrophotometry) using Glucose Oxidase.
Patient Preparation
None
Collection Instructions
- Collect specimens according to clinical policies and procedures.
- CSF Tube Distribution:
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Tube#1 |
Chemistry |
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Tube#2 |
Microbiology |
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Tube#3 |
Hematology |
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Tube#4 |
Virology/Special/Hematology |
Specimen Requirements
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Minimum Volume |
Due to the nature of CSF specimens, no volume is rejected, but if specimen volume is inadequate, not all testing may be completed. The provider and/or pathologist will be contacted to discuss test priority if specimen volume is inadequate. |
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Container |
CSF specific tubes without additive |
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Stability |
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Rejection Criteria |
Not Defined |
Result Reporting and Reference Values
Reported in mg/dL.
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Age |
Low |
High |
Critical Low |
Critical High |
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All |
40 |
70 |
N/A |
N/A |
Reflex Testing
None
Limitations
- Ortho reports a bias with the following:
- Glutathione at 61.5 mg/dL has a -8.6 bias
- Ortho reports no significant interference with the following:
- Bilirubin at 40 mg/dL