system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The most reliable urine specimen is obtained by:
assistant
The correct answer is  Suprapubic aspiration avoids potential contamination Urinary Tract infection Most often, the urine is often obtained from a voided specimen. In children, who are not toilet trained, a urine collection device, such as bag, is placed over the genitals, and the urine is cultured from the bagged specimen Suprapubic aspiration avoids potential contamination; however due to its invasiveness, it is rarely used except in children and selected patients Urine obtained from a urinary catheter is less invasive than a suprapubic aspiration and is less likely to be contaminated than that from a voided specimen. Ref: Smith 18th edition Pgno: 200