WBC in synovial fluid

Indications

• infectious arthritis
• inflammatory arthritis
• hemarthrosis

Reference interval

• < 200 /mm3

Clinical significance

• non-inflammatory conditions
  • < 3000 WBC/mm3 (< 3 x 10E9/L): < 30% neutrophils
  • no RBC
• inflammatory
  • 3000-75,000 WBC/mm3 (3-75 x 10E9/L): > 50% neutrophils
  • no RBC
• infectious
  • 50,000-200,000 WBC/mm3 (50-200 x 10E9/L): > 90% neutrophils
  • RBCs present
• hemorrhagic
  • 50-10,000 WBC/mm3 (0.05-10 x 10E9/L): < 50% neutrophils
  • RBCs present

More general terms

• synovial fluid cell count
• leukocytes (WBC) in body fluid

More specific terms

• eosinophils in synovial fluid
• lymphocytes in synovial fluid
• macrophages in synovial fluid
• monocytes in synovial fluid
• mononuclear cells in synovial fluid
• neutrophils in synovial fluid
• WBC other in synovial fluid

Additional terms

• synovial fluid
• synovial fluid analysis

Component of

• other cells/leukocytes in synovial fluid