Differential Cell Count (Cerebrospinal Fluid and Other Body Fluids)
CSF Cell Differential
Test Codes
CSF: Antrim #20738, Body Fluids: Antrim #20745
Department
Hematology
Instructions
This test is not orderable. It is a reflex test for CSF or Body Fluid Cell Count. Please see Cell Counts (Cerebrospinal Fluid and Other Body Fluids) for collection, transport, and storage information.
Performed
Sunday – Saturday, 24 hours a day. STAT results available within 60 minutes if no further verification is necessary. Routine results are available within 3 hours.
Reference Range
Pleural Fluid: PMN: 0-25% Mononuclear: 0-75%.
Synovial Fluid: PMN: 0-25% Mononuclear: 0-75%.
Test Methodology
Cytospin Preparation.
Interpretation
All CSF specimens and Pediatric Hematology fluids with WBC counts within the normal range (less than or equal to 5 WBC/mcL) will have a CSF or fluid scan differential performed. RBCs, PMNs and mononuclear cells will be reported if present. All specimens with WBC counts greater than or equal to 6 WBC/mcL will have a differential performed.
Cerebrospinal fluid may be examined as an aid in the diagnosis of meningitis, subarachnoid hemorrhage, encephalitis, CNS syphilis, CNS leukemia, CNS tumor and multiple sclerosis. In general, CSF changes due to a viral etiology will exhibit increased lymphocytes and those changes due to a bacterial etiology will show increased neutrophils. Other body fluids may be examined to determine the etiology of effusions and can sometimes be of extreme usefulness in distinguishing an inflammatory from malignant etiology.
Farmington Hills: Differentials are performed on all body fluid specimens with WBC counts greater than 5. CSF scans are not performed.
Clinical Utility
Normal body fluids are clear, colorless and hypocellular. A change in physical appearance, an increase in cell count and differentiation of WBC may indicate a variety of diseases.
CPT Codes
89051
Contacts
Hematology Laboratory – TYL
313-295-5360
Name: Hematology Laboratory – TYL
Location:
Phone: 313-295-5360
Hematology/Coagulation Laboratory – TRN
734-671-3862
Name: Hematology/Coagulation Laboratory – TRN
Location:
Phone: 734-671-3862
Hematology Laboratory – DBN
313-593-7905
Name: Hematology Laboratory – DBN
Location:
Phone: 313-593-7905
Hematology Laboratory – RO
248-551-8080
Name: Hematology Laboratory – RO
Location:
Phone: 248-551-8080
Hematology/Coagulation Laboratory – FH
947-521-8243
Name: Hematology/Coagulation Laboratory – FH
Location:
Phone: 947-521-8243
Hematology/Urinalysis Laboratory – GP
313-473-1809
Name: Hematology/Urinalysis Laboratory – GP
Location:
Phone: 313-473-1809
Hematology/Coagulation Laboratory – TR
248-964-8040
Name: Hematology/Coagulation Laboratory – TR
Location:
Phone: 248-964-8040
Hematology Laboratory – WYN
734-467-4029
Name: Hematology Laboratory – WYN
Location:
Phone: 734-467-4029
Last Updated
3/20/2023
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