Final answer:
A sterile urine specimen collected directly from the bladder using a needle is known as a suprapubic aspiration, used for accurate diagnosis of urinary tract infections through urine culture.
Step-by-step explanation:
The urine specimen obtained by inserting a sterile needle directly into the urinary bladder and aspirating a sample of urine is known as a suprapubic aspiration. This procedure is often used when a particularly sterile sample is needed, for instance, when diagnosing a urinary tract infection where accurate identification of the bacteria present is vital. Typically, urine culture and microscopic examination may follow to determine the presence and type of bacteria, ensuring the prescription of the most effective antibiotic treatment. This method is used when a sterile urine sample is necessary, such as for culture and sensitivity testing to identify a specific bacterial infection in the urinary bladder. The procedure involves the insertion of a sterile needle through the skin and abdominal wall into the bladder to collect the urine sample.