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Test Code CSF CELLCT CSF Cell Count & Diff

Clinical System Name

CSF Cell Count & Differential

Sample Requirements

Specimen:  CSF
Container(s): Sterile Screw-Capped Container/Tube or Syringe,

Preferred Vol: 1.0-2.0 mL

Minimum Vol: 0.5 mL

Note: Note collection type on requisition and container (e.g. "LP" for CSF lumbar puncture.) Send to the lab immediately (within 1 hour) for accurate results. Cells start to lyse upon standing.


Processing Instructions

Reject due to: Age of Specimen

Spin: N

Aliquot: N

Temp: RT

Storage location: Deliver to Core lab Hematology bench ASAP. 


Off-site collection: None specified



Specimen Type Temperature Time
Body Fluid RT

 1 hr

Body Fluid 2-8oC

 1 hr

Body Fluid -20oC or -70oC




STAT Performed TAT
Y 24/7 1 H


Performing Laboratory

Seattle Children's Laboratory    


Department:  Core Hematology

Phone Number: 206-987-2617

Reference Range


Cerebrospinal Fluid Children's Normal Ranges
0  - 1 Month         0 - 30 WBC/µl
 1 mo - 1 year    0 - 10 WBC/µl
 1 year - adult    0 -5 WBC/µl



Method:  Plated on a iNCYTO hemacytometer

Analytical Volume:  0.05mL

CPT Codes