Which of the following techniques would NOT typically lead to erroneous results in urine testing?

Following proper timing for specimen collection is essential in urine testing as it ensures the accuracy and reliability of the results. Most urine tests, such as those for specific gravity, pH, and the presence of various substances, can be significantly affected by when the sample is collected. For instance, certain metabolites may be excreted at different rates throughout the day, and collecting samples at designated times can help capture the relevant physiological state and avoid fluctuations caused by diurnal variations.

In contrast, collecting samples in glass containers, over non-standard time periods, or using improper collection tubes can all introduce variables that may compromise the integrity of the sample. For example, certain plastics might interact with urine components, and non-standard collection times could lead to misleading results because the concentration and composition could vary widely outside of recommended timeframes. Therefore, maintaining proper timing during specimen collection is crucial for obtaining accurate and reliable urine test results.