synovial fluid cell count

Reference interval

• WBC: < 200 /mm3
  • neutrophils < 25%
  • lymphocytes 0-78%
  • monocytes 0-71%
  • macrophages 0-25%
• RBC: 0-2000/mm3
• synovial cells 0-12%

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
• also see cells in synovial

More general terms

• cell count
• synovial fluid analysis
• hematology panel

More specific terms

• erythrocytes in synovial fluid
• synovial cells in synovial fluid
• WBC in synovial fluid

Additional terms

• cells in synovial fluid
• synovial fluid