erythrocytes in synovial fluid

Reference interval

• RBC: 0-2000/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

Increases

• hemarthrosis

More general terms

• synovial fluid cell count
• erythrocytes (RBC) in body fluid

More specific terms

• nucleatederythrocytes in synovial fluid

Additional terms

• synovial fluid
• synovial fluid analysis