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synovial fluid cell count

Reference interval: 1) WBC: < 200 /mm3 a) neutrophils < 25% b) lymphocytes 0-78% c) monocytes 0-71% d) macrophages 0-25% 2) RBC: 0-2000/mm3 3) synovial cells 0-12% Clinical significance: 1) non-inflammatory conditions - < 3000 WBC/mm3 (< 3 x 10E9/L): < 30% neutrophils - no RBC 2) inflammatory - 3000-75,000 WBC/mm3 (3-75 x 10E9/L): > 50% neutrophils - no RBC 3) infectious - 50,000-200,000 WBC/mm3 (50-200 x 10E9/L): > 90% neutrophils - RBCs present 4) hemorrhagic - 50-10,000 WBC/mm3 (0.05-10 x 10E9/L): < 50% neutrophils - RBCs present 5) also see cells in synovial

Related

cells in synovial fluid synovial fluid

Specific

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

General

cell count synovial fluid analysis hematology panel

References

  1. Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 467-472
  2. Laboratory Medicine: Test Selection & Interpretation. Howanitz & Howanitz (eds), Churchill Livingstone, NY, 1991, pg 116-121