When performing urinalysis testing, the sample should be analyzed within --- minutes, or refrigeration is required.

When performing urinalysis testing, the sample should be analyzed within --- minutes, or refrigeration is required.

• A. 40
• B. 20
• C. 30
• D. 10

Answer: (C)

Urine changes quickly after collection; bacteria can multiply, chemical reactions shift pH, and formed elements may degrade or settle. These changes can alter the results of the urinalysis, so the sample should be analyzed promptly to preserve its original state. Thirty minutes is the common window for testing to ensure accuracy. If analysis isn’t possible within that time, refrigerate the sample at 2–8°C to slow the changes. When you’re ready to test a refrigerated sample, let it come to room temperature and gently mix to resuspend any sediment. This approach helps ensure the results reflect the urine as it was at collection rather than storage-induced changes.

Urine changes quickly after collection; bacteria can multiply, chemical reactions shift pH, and formed elements may degrade or settle. These changes can alter the results of the urinalysis, so the sample should be analyzed promptly to preserve its original state. Thirty minutes is the common window for testing to ensure accuracy. If analysis isn’t possible within that time, refrigerate the sample at 2–8°C to slow the changes. When you’re ready to test a refrigerated sample, let it come to room temperature and gently mix to resuspend any sediment. This approach helps ensure the results reflect the urine as it was at collection rather than storage-induced changes.