- Synovial Fluid Exam
- Systemic JRA
- Septic Arthritis
- Leukemia
- Systemic Lupus Erythematosus
- Reiter's Syndrome
- Reactive Arthritis
- Sickle Cell Anemia
- Serum Sickness
- Acute Rheumatic Fever
- Vasculitis: (H.S.P. / Kawasaki's)
- Inflammatory Bowel Disease