antistreptolysin O assay
antistreptolysin O assayASO test Lab medicine A serologic test that monitors group A β-hemolytic streptococcal infection, ie 'strep throat'–90% positive, which may progress to acute streptococcal glomerulonephritis–
±25% are ASO positive, scarlet fever, and rheumatic fever, and thus used to monitor response to therapy. See Strep throat.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.