Cell Count And Differential, Synovial Fluid

Orderable EAP code:

LAB00700

Billable EAP Codes:

80001837 x 1

CPT Codes:

89051 x 1

Lab Section:

Core Lab

Turnaround Time:

Routine: 4 Hours
Urgent: 2 Hours

Test Schedule:

24 hours, 7 days a week.

Critical Values:

WBC greater than or equal to 25,000/cu mm; Intracellular Bacteria; Malignant Cells; Atypical Cells if no previous.

Specimen Requirements:

3 mL synovial fluid in a LAVENDER top tube

Pediatric Specimen Requirements:

1 mL synovial fluid in a 3 mL LAVENDER top tube

Reference Range:

WBC less than or equal to 200 cu mm. Neutrophils less than or equal to 25%.

Comments:

See also Synovial Fluid, Crystals and/or Synovial Fluid Examination.

Cell counts will be attempted on all fluids sent. However, specimen volume and quality may affect or prevent testing (i.e. specimens with small clots will be tested and results reported with a disclaimer that results may be affected, but specimens that are fully clotted cannot be counted). 

CSF and body fluid specimens should be examined within 1 hour of collection; if it can't be examined within 1 hour, refrigerate. Stable for 8 hours at 2 to 8 C (although there can be cell deterioration).

Synonyms:

Synovial Fluid, Cell Count And Differential