What is the correct method for collecting a urine specimen?

The correct method for collecting a urine specimen involves applying a clamp to the drainage tubing and then aspirating urine. This technique is particularly useful when dealing with patients who have a catheter in place, as it helps ensure that the urine sample is collected directly from the bladder, minimizing contamination from other sources. By clamping the drainage tubing, you temporarily prevent any new urine from entering the drainage bag, allowing a clean sample to be obtained from the urine that is already in the tubing.

This method also maintains a sterile environment, which is crucial for accurate laboratory results, especially in cases where the patient may have infections or when sterile specimens are required. It emphasizes maintaining aseptic technique throughout the procedure to ensure the integrity of the specimen.

Other methods listed are not recommended for proper urine collection due to the potential for contamination or complications. For example, inserting a catheter directly into the bladder may be invasive and could introduce bacteria if proper sterile techniques are not followed. Using a non-sterile needle to draw urine poses a risk of contamination as well, and collecting urine in a regular container might not meet the necessary sterile requirements for certain tests.