ADB cut-off values for normal children (80% ULN)
| Country | ULN | N | Age range | Technique | Year published | Handling of recent streptococcal infections |
| India (Mumbai)6 | 200 IU | 40 | 5–15 | Microtitration haemolysin inhibition | 2003 | See table 4. 3a |
| Turkey27 | 219.2 IU | 121 | 5–15 | Nephlometric | 2015 | Direct inquiry, excluded previous history of streptococcal infection, those exhibiting symptoms and signs of an infection and those with upper respiratory tract and skin infection within the previous 3 months. |
| Australia (urban)10 | 300 IU | 64 | 4–14 | Microtitration haemolysin inhibition | 2005 | See table 4. 3a |
| Korea8 | 362 IU | 266 | 7–12 | Nephlometric | 2005 | See table 4. 3a |
| Fiji11 | 499 IU | 186 | 5–14 | Enzyme inhibition assay | 2008 | See table 4. 3a |
| Uganda (this study) | 568 IU | 183 | 5–14 | Enzyme inhibition assay | 2019 | See table 4. 3a |
| USA5 | 640 IU | 1131 | 2–12 | Microtitration haemolysin inhibition | 1997 | See table 4. 3a |
ADB, antideoxyribonuclease B; ASO, antistreptolysin O; GAS, group A streptococcal; ULN, upper limit of normal.