Difficulty: Hard

Average Score: 35%

A phlebotomist is instructing a patient who has a suspected UTI about urine sample collection. The phlebotomist should instruct the patient to

Rationale

Collect the sample midstream.

Collecting a urine sample midstream helps ensure that the sample is less contaminated by bacteria or cells from the urethra, providing a more accurate assessment for diagnosing a urinary tract infection (UTI).

A (Collect the sample in a clean container.) YOUR ANSWER

While using a clean container is important to avoid contamination, it does not address the technique of urine collection itself. A clean container alone does not guarantee that the sample is representative of urine produced by the bladder, which is crucial for accurate UTI diagnosis.

C (Collect a first-morning specimen.) YOUR ANSWER

Collecting a first-morning specimen is typically recommended for tests requiring concentrated urine, such as pregnancy tests or certain metabolic assessments. However, for UTI diagnosis, a midstream sample is preferred to reduce contamination and provide a clearer indication of the infection.

D (Collect a 24-hr urine sample.) YOUR ANSWER

A 24-hour urine sample is used to assess kidney function or measure substances over an entire day. This method is not appropriate for diagnosing a UTI, as it does not focus on isolating bacteria from a single, recent void, which is essential in identifying an infection.

Conclusion

For patients with a suspected UTI, instructing them to collect a midstream urine sample is the best practice. This method minimizes contamination and provides a more accurate representation of the urine from the bladder, which is critical for effective diagnosis. Other collection methods may lead to inaccurate results and are not suitable for this specific purpose.

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