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Test Code 0202804 Differential, Spinal Fluid

Methodology

Light Microscopy

Includes polymorphonuclear leukocytes (PMNs), lymphocytes, and monocytes/histiocytes.

Note: A differential is performed only if WBCs are 5 or >

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Specimen Type: Spinal fluid

Container/Tube: Sterile vial

Specimen Volume: 0.5 mL

Specimen Transport Temperature

Ambient

Reference Values

PMNs

≤1 year: 0-8%
>1 year: 0-7%
LYMPHOCYTES
≤1 year: 5-35%
>1 year: 28-96%
MONOCYTES/HISTOCYTES
≤1 year: 50-90%
>1 year: 16-56%

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

89051