Specimen Questions
How can specimens be stored prior to testing?
Urine specimens may be stored at 2-8 degrees C for up to 48 hours prior to testing. For prolonged storage, specimens may be frozen and stored below -20 degrees C. Frozen specimens should be thawed and mixed well before testing.

For specimen undergoing Specimen Validity testing, test specimens immediately for best results. Storage of urine specimens should not exceed 2 hours at room temperature or 4 hours refrigerated.
How should urine specimens be collected?
The urine specimen must be collected in a clean and dry container. Urine collected at any time of the day may be used. Urine specimens exhibiting visible precipitates should be centrifuged, filtered, or allowed to settle to obtain a clear specimen for testing.
Will menstrual blood have any effect on the test?
No, menstrual blood should not affect the test. Urine specimens exhibiting visible precipitates should be centrifuged, filtered, or allowed to settle to obtain a clear specimen for testing.