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HelpTest Code LAB142 CSF Cell Count & Diff
Clinical System Name
CSF Cell Count & Differential
Synonyms
CSF CELLCT
LAB142
Sample Requirements
Specimen: CSF
Container(s): Sterile Screw-Capped Container, Sterile Screw-Capped Tube, or Syringe
Preferred Vol: 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.
Lab testing is performed using the following tube designation, regardless of label on tube:
- Extra/non-routine studies
- Chemistry
- Microbiology
- Cell Counts and Cytology
Processing Instructions
Deliver to Core lab Hematology bench ASAP.
Reject due to: Age of Specimen (give to Core Lab for determination)
Spin: N
Aliquot: N
Storage location: Core 5 Fridge
Off-site collection: None specified.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | RT |
≤ 1 h |
| CSF | 2-8 C |
≤ 1 h |
| -20 C or -70 C |
N |
Availability
| STAT | Performed | TAT |
|---|---|---|
| Y | 24/7 | 1 h |
Performing Laboratory
Seattle Children's Laboratory
Department
Department: Core Hematology
Phone Number: 206-987-2617 (Client Services)
CPT Codes
89050: Cell Count, NO Differential
89051: Cell Count, WITH Differential
88108: Cytology
Methodology
Method: Plated on a iNCYTO hemocytometer
Analytical Volume: 0.05mL
Reference Range
| Cerebrospinal Fluid | Children's Normal Ranges |
| 0 - 1 m | 0 - 30 WBC/µl |
| 1 m - 1 y | 0 - 10 WBC/µl |
| 1 y - adult | 0 -5 WBC/µl |