Arthrocentesis - Synovial Fluid Analysis Normal < 150 WBC, Colorless/Straw color, High Viscosity Noninflammatory < 3,000 WBC, Straw/yellow color, High Viscosity Inflammatory > 3,000 WBC, Yellow color, Low Viscosity Septic (purulent) > 50,000 WBC, Pus/mixed color, Mixed Viscosity Hemorrhagic WBC similar to blood, Red color, Low Viscosity UCSD Internal Medicine @ucsdim #Arthrocentesis #Synovial #Fluid #Analysis #interpretation #diagnosis
