Normal : Systolic <120 mm of Hg & Diastolic <80 mm of Hg;
Above normal: Systolic >140 mm of Hg or Diastolic >90 mm of Hg
Moderately high: Systolic >160 mm of Hg or Diastolic >100 mm of Hg
Very high: Systolic >180 mm of Hg or Diastolic >110 mm of Hg
Units:mm of Hg-milli mole per mercury
Sources:
National Family Health Survey (NFHS). District Level Household Survey (DLHS). Annual Health Survey (AHS)