Document ID: chunk:federal_register_of_legislation:F2023L00203:clause:1_112
Version: federal_register_of_legislation:F2023L00203
Segment Type: clause
Provision Reference: sch 1 cl 112
Character Range: 78195–78771

112     A score reflecting impairment from asthma is calculated by:
      a)      adding the points scored for reduction in FEV1 %P;

      and either
        i)        change in FEV1 with bronchodilator (reversibility);

      or
        ii)      degree of bronchial hyperreactivity defined by the cumulative dose of metacholine, or histamine, required to decrease baseline FEV1 by at least 20%;

      and
      b)      measurement of FEV1, or peak flow (PF) rate, measured by the employee morning and evening, before and after aerosol bronchodilator, for at least 30 days.