True bacteriuria

True bacterial urine refers to: ① urine culture of bladder puncture, bacterial growth, or colony count> 102 / ml. ② Quantitative culture of urinary catheters ≥ 105 / ml. ③ Quantitative clean urine culture in the middle section ≥ 105 / ml, 80% accuracy at one time; the same strain was obtained after two consecutive cultures, and the number of colonies was ≥ 105 / ml, accuracy was 95%;