 Lab investigations  04/2010  03/2008  08/2007  03/2006  07/2005 
 Synovial fluid WBC (cells/mm^{3})  110  30,960  27,000  40,000  220  Synovial fluid culture  Neg  Neg  Neg  Neg  Neg  Crypto/Cocci Ag/fungal stain and Cx  Neg  Neg  Neg  Neg  Neg  Atypical mycobacterium/mycoplasmas/ureaplasma  Neg  Neg  Neg  Neg  Neg  AFB  Neg  Neg  neg  neg  neg  ESR mm/hrCRP mg/dL  60/5.1  41/4.1  30/13.5  34/7.5  40/2.3  Blood culture and viral cultures  Neg  Neg  Neg  Neg  Neg 

