Cell Count and Differential, Synovial Fluid
Use
This assay evaluates synovial fluid for cellular elements—specifically, total nucleated cell count and differential cell percentages such as neutrophils, lymphocytes, monocytes/macrophages, eosinophils, basophils, and synoviocytes—thus aiding in the assessment of joint disorders, including inflammatory, infectious, traumatic, and neoplastic etiologies. Interpretation of nucleated cell counts and cell differentials may assist in distinguishing non‐inflammatory vs inflammatory vs infectious processes.
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Other
Biomarkers
LOINC Codes
- 30086010
- 30086100
- 30086310
- 30086510
- 30086410
- 30087520
- 30087540
- 30087545
- 30087580
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Body Fluid
Volume
3 mL (1 mL minimum)
Minimum Volume
1 mL
Container
EDTA (lavender‑top) tube or sodium heparin (green‑top) tube
Collection Instructions
Collect synovial fluid (3 mL preferred, 1 mL minimum) in an EDTA (lavender‑top) or sodium heparin (green‑top) tube.
Causes for Rejection
Clotted
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 48 hours |
Other tests from different labs that may be relevant