Cell Count and Differential, Spinal Fluid

Message
Sample should be processed within 2 hours after collection when stored
at ambient temperature. Refrigeration at 4C may help to retard cell destruction.


Test Code
CCT


CPT Codes
89051

Includes
Includes: Clarity; Color; Differential; Red Blood Cell Count; White Blood Cell Count;Fluid Type


Preferred Specimen
2.0 mL spinal fluid


Instructions
Specimen must arrive within 1 hour of collection. Maintain sterility and forward promptly. Refrigerate if prompt delivery is not possible. Note: this test will be performed on tube #3 or the last tube collected.


Transport Container
CSF kit


Methodology

Coulter count (or manual count via hemocytometer) of cells (WBC, RBC) depending on appearance and instrument limitations. Microscopic smear evaluation for WBC differential.



Reference Range
WBC: 0-5/µL; RBC: 2-5/µl; Segmented Neutrophils: 0-7%; Lymphocytes: 28-96%; Monocytes: 16-56%


Clinical Significance
Useful for determining the extent of infection.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.