sterile pyuria causes
The causes of sterile pyuria include: 1  a treated urinary tract infection (UTI) within 2 weeks of treatment/inadequately treated (UTI) 2  UTI with fastidious culture requirement. 3  renal stones. 4  prostatitis. chlamydia urethritis.  renal papillary necrosis (e.g. from analgesic 1  excess) tubulo-interstitial nephritis.