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Test Code BFCNT Cell Count Miscellaneous Fluid LAB210

Test Method

Sysmex XN System:

  • WBC: Impedance counting
  • RBC:  Impedance counting
  • WBC Differential: Flow cytometry

Alternate Method: Hemacytometer Counting Chamber and
Microscopy

Performance

Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the
specimen arrives at the testing site.

Expedite orders: Typically completed within 2 hours after the
specimen arrives at the testing site.

STAT orders: Typically completed within 1.5 hours after the
specimen arrives at the testing site.

Specimen Requirement

1 mL of body fluid is required.

Useful For

These counts are used as clinical guides in the diagnosis and/or
monitoring of diseases processes.

Reference Values

Reference values for miscellaneous fluid cell counts are not
established. Results are subject to interpretation by the
clinician.

 

CPT Code Information

89051 Other Pathology Services: Cell Count, miscellaneous
body fluids, except blood; with differential count

LOINC Code Information

57845-0 Leukocytes [#/Volume] In Body Fluid By Automated
Count

Additional Specimen Collection Information

Transfer 1 mL of body fluid from the collection syringe to an
EDTA purple-top tube. Clotted specimens are not acceptable for cell
counts. If the analysis is delayed refrigerate for up to 1
hour.

 

Wright Stain or Gram Stain: Perform a “Cytospin” on the sample
as soon as possible. Do not use anticoagulant and do not
refrigerate the sample.