▁be ▁cult ured . ▁In ▁children , ▁polym er ase ▁chain ▁reaction ▁sequ encing ▁of ▁ur ine ▁can ▁detect ▁fragments ▁of ▁the ▁inf ect ious ▁agent . ▁ ▁The ▁procedure ▁diff ers ▁somewhat ▁for ▁women ▁and ▁men . ▁ ▁Labor atory ▁testing ▁of ▁ur ine ▁samples ▁now ▁can ▁be ▁performed ▁with ▁dip st icks ▁that ▁indicate ▁imm une ▁system ▁responses ▁to ▁in fection , ▁as ▁well ▁as ▁with ▁micro scop ic ▁analysis ▁of ▁samples . ▁Normal ▁human ▁ur ine ▁is ▁ster ile . ▁ ▁The ▁presence ▁of ▁b acter ia ▁or ▁p us ▁in ▁the ▁ur ine ▁usually ▁indicates ▁in fection , ▁although ▁asympt om atic ▁b acter ia ▁in ▁the ▁ur ine ▁is ▁a ▁common ▁finding ▁in ▁older ▁adult s ▁( e . g . ▁over ▁ 6 5 ▁and ▁increasing ▁with ▁adv ancing ▁age ). ▁ ▁The ▁presence ▁of ▁hem atur ia , ▁or ▁blood ▁in ▁the ▁ur ine , ▁may ▁indicate ▁ac ute ▁U T Is , ▁kid ney ▁disease , ▁kid ney ▁stones , ▁infl amm ation ▁of ▁the ▁pro state ▁( in ▁men ), ▁end omet rios is ▁( in ▁women ), ▁or ▁cancer ▁of ▁the ▁ur inary ▁tract . ▁ ▁In ▁some ▁cases , ▁blood ▁in ▁the ▁ur ine ▁results ▁from ▁athlet ic ▁training , ▁particularly ▁in ▁run ners . ▁ ▁Tre at ment ▁Unfortunately ▁mes na ▁ ▁is ▁in effect ive ▁as ▁a ▁treatment ▁once ▁hem or rh ag ic ▁c yst itis ▁has ▁developed . ▁ ▁Although ▁rare , ▁once ▁a ▁case ▁of ▁radiation -