Medicine In a Patient with clinical signs of Asthma which of the following tests will confirm the diagnosis: A Increase in FEV1/FVC B > 200 ml increase in FEVI after Methacholine C Diurnal variation in PEF > 20 Percent D Reduction of FEV I > 20 % after bronchodilators 💡 Explanation In a Patient with clinical signs of Asthma which of the following tests will confirm the diagnosis: ✓ Correct Answer: C. Diurnal variation in PEF > 20 Percent