<prompt> Answer this question truthfullyWhich type of arthritis is characterized by non-inflammatory synovial fluid, with a white blood cell count of less than 2000mm3, osteoarthritis or rheumatoid arthritis?  <response>: <reason> Osteoarthritis is the type of arthritis that is characterized by non-inflammatory synovial fluid with a WBC count of less than 2000mm3. This feature is not reliable in distinguishing between OA and RA, as RA can also have non-inflammatory synovial fluid. 