Serum uric acid levels and uric acid/creatinine ratios: affordable biomarkers for predicting chronic obstructive pulmonary disease severity and exacerbations

Background Chronic obstructive pulmonary disease (COPD) is an essential initiate the conditions of mortality and morbidity. Objective This study evaluated the clinical importance of measuring the level of serum uric acid (sUA) level and uric acid/creatinine (UA/Cr) ratio in stable COPD patients as objective biomarkers of disease severity and exacerbations Participants and methods The research involved 283 stable COPD patients and 123 healthy controls. The sUA levels and sUA/Cr ratios in both groups were assessed and compared; their correlations with the clinical, class of severity, number of exacerbations per year, spirometry parameters, oxygen saturation, and C-reactive protein were investigated. Linear regression analysis was done to examine the most predictors for severity and exacerbations, receiver operating characteristic curve for risk of exacerbation, and severity of COPD were reported to study the cut-off values, sensitivity, and specificity of both sUA and UA/Cr ratio. Results There were significant correlations between both sUA, and UA/Cr ratio with the number of exacerbations and hospitalizations per year, all spirometry data, and C-reactive protein. A linear regression shows significance (F=374, P