Background:BPH is a common condition among elderly males. It  has been reported in 50% of all males by the 6^th decade and over 90 % males above 70 years. Most patients with BPH present with symptoms of difficulties of voiding.AUA BPH guidelines provide a rational and balanced approach for evaluation and management of patients with symptomatic BPH. Aim: to assess the AUA score in some prostaticdisorders and find out the correlation of the score with postvoidal residual urine.Materials and Methods:this retrospective study comprises of 154 cases of which 60 cases without any urinary symptoms were taken as controls in contrast to 94 cases showing urinary symptoms.  The subjects were given an AUA score index and the score was found out for each person and later the patients were screened through transurethral sonography to find out the prostatic weight and postvoidal urine volume. Result:the AUA score has definite correlation with residual urine volume. Conclusion:the aua score is most effective  noninvasive procedure  to evaluate the progress of BPH.