Glucose, Cerebrospinal Fluid
(CSF)

Sample type

Cerebrospinal Fluid (CSF)

Uses

Diagnosis of tumors, infections, inflammation of the CNS, and other neurologic and medical conditions

Precautions

Just before the test, patient may be asked to empty your bladder. patient will then be placed into a certain position so that him healthcare provider can more easily get the CSF sample.
healthcare provider ask patient about all medicines, herbs, vitamins, and supplements patient are taking. This includes medicines that don’t need a prescription and any illicit drugs patient may use.
A CSF specimen is obtained by spinal tap and should be collected in sterile tubes and submitted to the laboratory as soon as possible

Interfering factors

Some medicines, foods, and beverages may affect the results.

Pre-analytical errors

If a patient takes medicines that affect their glucose level
When collecting specimens in an unsterile tube, the sample becomes contaminated, leading to an incorrect result.
put the specimen at room temperature for a long time; this may affect the result.

The corrective action

Tell the patient to stop taking any medications that affect their glucose level prior to the collection of a sample.
The sample must be rejected and another sample obtained because the sample should be collected in sterile tubes.
If you can’t do the test within a short time, you should put it in the refrigerator (at 4C) to prevent contamination of the specimen.

Post-analytical errors

The corrective action

communication with patient, apologising for the error, and providing him with the correct report
If the report is not delivered to the patient and this error is discovered, the correct result or the correct name must be written, but if the report is delivered to the patient, you must communicate with him, apologise to him, and tell him that an error has occurred and replace it with the correct report.

Reference Range

40–75 mg/dL (2.2-4.2 mmol/L)