RecruitingPhase 4Drug trialNextGen - Clinical Implication of Next Generation SequencingRecently more advanced techniques, including Polymerase Chain Reaction (PCR) and Next Generation Sequencing (NGS) are available to detect bacteria in urine based on bacterial genomes. Comparing to traditional culture, these techniques have more sensitivity and could potentially be of a great help in patients with Colony Count of less than 10,000 and more than zero.