Objective To compare the reliability of a urine dipstick evaluation for leukocyte esterase( LE) and nitrite( NIT) activity and smear Gram staining microscopic examination with the urine culture in diagnosing urinary tract infection( UTI).

• 目的比较尿干化学分析中白细胞酯酶、硝酸盐试验和涂片染色镜检在筛选泌尿系统感染中的可靠性。