... Thank you for your response. CBC, everything was within normal limits. Rheumatoid Arthritis Factor RA Latex Turbid. 5.2 IU/mL ANA w/Reflex if Positive Antinuclear antibodies Direct 28 U/mL Sedimentation Rate-Westergren 4 mm/hr Antistreptolysin O Ab 651.2H IU/mL C-Reactive Protein, Quant 0.4 mg/L All were listed within normal limits except the ASO titer. (7 replies)