Item Value
Test name Cell Count and Differential, CSF
Available Stat? Yes
Turn around times Stat 1 hour, Routine 2 hours
In House Availability Test available 24 hours per day 7 days per week
Performed by Parnassus & Mission Bay Hematology
Normal range
Appearance Clear
Xanthochromia Negative
WBC < 6 x106/L
RBC None
Neutrophils None


A reference range has not been established by the UCSF Clinical Laboratory for CSF WBC differential, except for neutrophil parameter. Clinical correlation required for interpretation.
Container type LP kit tube #3 preferred, sterile collection tube acceptable
Amount to Collect See preferred volume
Collection Instructions Number tubes in order of withdrawal; deliver IMMEDIATELY. Do not use Lavender top, which will alter cellular morphology. Specimen label must contain the date and time the sample was collected and the legible name of the person who collected the sample.

Cerobrospinal fluid (CSF) specimens should be transported at ambient temperature as soon as possible after collection. Cellular degeneration of CSF can begin within one hour of collection.
Sample type CSF

If you have additional questions regarding this test, please call: 415-353-1667