Test Details
Methodology
Spectrophotometry
Result Turnaround Time
1 - 2 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
A nonspecific but reliable indication of CNS pathology such as meningitis, brain abscess, meningovascular syphilis, CVA, neoplastic diseases, multiple sclerosis, and other degenerative processes causing neurologic disease
Specimen Requirements
Specimen
Cerebrospinal fluid (CSF)
Volume
1 mL
Minimum Volume
0.3 mL (Note: This volume does not allow for repeat testing.)
Container
Clean sterile tube
Collection Instructions
A CSF specimen is obtained by spinal tap and should be collected in sterile tubes and submitted to the laboratory as soon as possible. Ordinarily, three samples are collected in sterile tubes, labeled sequentially as N° 1 (chemistry and immunology studies), N° 2 (microbiological examination), and N° 3 (cell count and differential). Tubes must be labeled with the patient's full name, date, time of collection, and with the number indicating the sequence in which the tubes were obtained.
Reference Range
See table.
Age | Range (mg/dL) |
|---|---|
0 to 1 m | 25.0−72.0 |
2 to 3 m | 20.0−72.0 |
4 to 6 m | 15.0−50.0 |
7 to 11 m | 10.0−45.0 |
1 to 2 y | 10.0−40.0 |
3 to 4 y | 10.0−38.0 |
5 to 8 y | 10.0−43.0 |
>8 y | 0.0−44.0 |
Storage Instructions
Refrigerate.
Causes for Rejection
Gross hemolysis; bloody tap
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 002055 | Protein, Total, CSF | 2880-3 | 002055 | Protein, Total, CSF | mg/dL | 2880-3 |
| Order Code | 002055 | |||||
| Order Code Name | Protein, Total, CSF | |||||
| Order Loinc | 2880-3 | |||||
| Result Code | 002055 | |||||
| Result Code Name | Protein, Total, CSF | |||||
| UofM | mg/dL | |||||
| Result LOINC | 2880-3 |