Urine samples should not be tested for more than a few hours

Urine samples should not be tested for more than 3 hours. In principle, the test should be completed within 1 hour.

The accuracy of the test results of urine samples will be affected by many factors such as storage time and processing method. In general, it is recommended to complete the test within 3 hours, because cells, crystals and microorganisms in urine samples may decompose or reproduce rapidly after being stored at room temperature for too long, affecting the test results. For special examination items, such as urine protein quantification, the requirements for urine freshness are more strict. In principle, it is generally recommended to send it to the laboratory for examination within 1 hour after collection.