Laboratory Test Information Guide

Details for Cell Count and Differential,CSF

Test Name: Cell Count and Differential,CSF
Alternate Name(s): CSF Analysis
Laboratory: Core
Specimen Type: Cerebrospinal Fluid
Collection Information: A minimum volume of 1 mL collected in each sterile, sequentially labeled CSF tube.

Only cell counts are performed on the first tube collected.

Cell counts and differential are performed on the last tube collected.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
1 hour
 
Reference Range: Cell Counts:

TNC x 106/L RBC x 106/L
< 1 year 0-30 few
1-5 years 0-20 few
6-16 years 0-10 few
Adult 0-5 few


Differential:

Neonate(%) Adult(%)
Lymphocytes 2-38 63-99
Monocytes 50-94 3-37
Neutrophils 0-8 0-2
Effective Date: 2006-12-27
Revised Date: 2014-02-25
Critical Value:  
Interpretive Comments: CSF is considered to be an irreplaceable specimen and is analyzed regardless of whether there are clots or particular matter present. Counts may be inaccurate in these circumstances.
Special Processing: Send sample to the lab immediately
Comments:  
Method of Analysis: Total nucleated cell counts and RBC counts are performed by manual counting on a Neubauer chamber or by automated analysis on a Hematology analyzer (when appropriate).

Differentials performed by microscopy.
Critical Information Required: It is imperative that the order of draw be accurately reflected by placement into the appropriately labelled sequential collection tube.


Storage & Shipment: Ship sample at room temperature.

Specimens must be received in the laboratory within 1 hour of collection as cells deteriorate quickly. Testing must proceed as quickly as possible following receipt in the laboratory.
System Codes: 
Cerner
CCSF
 
Referred To:  

Questions? Comments? Contact Laura Gopaul