*Presence of stones within the urinary tract
*Complications such as hydronephrosis (''See: [[Hydronephrosis]]'')
*Estimate Measure the likelihood size of stone passagestones. Stones less than 5 mm (0.2 in) in diameter pass spontaneously in up to 98% of cases, while those measuring 5 to 10 mm (0.2 to 0.4 in) in diameter pass spontaneously in less than 53% of cases.<ref name=Gettman2005>{{cite journal|last=Gettman|first=MT|last2=Segura|first2=JW|title=Management of ureteric stones: Issues and controversies|journal=British Journal of Urology International|volume=95|issue=Supplement 2|pages=85–93|year=2005|pmid=15720341|doi=10.1111/j.1464-410X.2005.05206.x}}</ref>
*Confirm any stone passage
*Assess the stone burden