Background: Comparison of pulmonary function tests (PFTs) were achieved between asthmatic case and Controls. Materials & Methods: Case-control study conducted at Baqai Medical University (50 cases and 50 control). PFTs in both the participants were estimated by spirometry; FEC, FEV1 and their ratios were estimated. Results: According to the findings all spirometric values were lower in asthmatic patients as compared to healthy subjects. Moreover the asthamatic subjects had lower lung values when compared with healthy subjects. Conclusion: The current study evaluated spirometric values in asthmatic patients in Gadap area. This study's findings can be applied to the treatment of asthma in people of all ages.