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Test Code LAB3921 Cell Count, Fluid

Performing Laboratory

Barnes-Jewish Hospital Laboratory

Methodology

Includes cell count.  Differential is added to orders with nucleated cell counts above 10 cells/mL. Cells enumerated by hemacytometer or automated method. Differential performed on smear prepared by cytocentrifugation method.

Literature Reference:

Kjeldsberg C, Knight J. Body fluids, 3rd ed. Chicago: ASCP 1993.

Specimen Requirements

Specimen must arrive within 1 hour of collection.

 

Specimen Type: Fluid

Sources: include, but are not limited to, pericardial, peritoneal, or pleural fluid

Container/Tube: Lavender top (EDTA)  See Body Fluid Collection Guidelines under Special Instructions.

Specimen Volume: 5 mL

Specimen Minimum Volume: 1 mL

Additional Information: Indicate source of specimen on specimen container and request form.

Day(s) Test Set Up

Monday through Sunday
Turnaround Time:
STAT: cell count: 90 minutes after receipt in laboratory
Routine: results available the day of testing

Test Classification and CPT Coding

89050 - Cell count

89051 - Cell count and differential

Reference Values

No established reference intervals

Specimen Transport Temperature

Ambient

Additional Information

For BJH Laboratory Use Only
Analyte Stability:

4 hours

Note: Specimens received >4 hours will be commented “Results may be suspect due to age of specimen.”

Laboratory Processing Instructions:

Test performed in BJH Core Lab.

Special Instructions

LOINC Code Information

Name LOINC code
Clarity 33515-8
Color 6824-7
Total Cells Differentiated 38256-4
Nucleated Cells 57845-0
RBC 23860-0
Segmented Neutrophils 12238-2
Lymphocytes 13941-0
Monocytes/Macrophages 30437-8
Macrophages 12230-9
Type Fluid 14725-6
Mesothelial Cells 12234-1