Upper limit of normal (80th centile) for serum streptococcal antibody titers in children and adults in tropical settings where group A Streptococcus disease is endemic
Upper limit of normal (80th centile) for serum streptococcal antibody titers in children and adults in tropical settings where group A Streptococcus disease is endemic
Age group (years)
Upper limit of normal (international units/mL)
ASO titer
ADB titer
1 to 4
170
366
5 to 14
276
499
15 to 24
238
473
25 to 34
177
390
≥35
127
265
ASO: anti-streptolysin O; ADB: anti-deoxyribonuclease B.