If a urine specimen cannot be analyzed promptly, what is the maximum recommended time for analysis at room temperature?

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Multiple Choice

If a urine specimen cannot be analyzed promptly, what is the maximum recommended time for analysis at room temperature?

Urine samples aren’t stable indefinitely at room temperature. Bacteria present in the urine can multiply and cause changes in pH, produce nitrites, alter glucose levels, and affect the composition and appearance of the sample. These changes can skew test results, especially for dipstick analyses and sediment exam. To keep results reliable, analyze the sample within about two hours if it’s kept at room temperature. If you can’t analyze it within that window, refrigerate the specimen (around 4°C) and aim to analyze within 24 hours. After that, even refrigeration may lead to unreliable results, and a new specimen may be needed.

Urine samples aren’t stable indefinitely at room temperature. Bacteria present in the urine can multiply and cause changes in pH, produce nitrites, alter glucose levels, and affect the composition and appearance of the sample. These changes can skew test results, especially for dipstick analyses and sediment exam. To keep results reliable, analyze the sample within about two hours if it’s kept at room temperature. If you can’t analyze it within that window, refrigerate the specimen (around 4°C) and aim to analyze within 24 hours. After that, even refrigeration may lead to unreliable results, and a new specimen may be needed.

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