Anatomy Ina 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 FEV1 after Methacholine C Diurnal variation inPEF>20 % D Reduction of FEV1>20% after bronchodilators 💡 Explanation Ina patient with clinical signs of asthma which of the following tests will confirm the diagnosis ✓ Correct Answer: C. Diurnal variation inPEF>20 %