A collection of all urine voided over a 24-hour period of time. Obtain a collection container from your doctor or the laboratory and follow the directions you are given for collecting your samples. To preserve the substance to be tested, the container may need to be refrigerated during the entire collection process. After getting up in the morning,...
A sample of urine collected over a specified period of time; for a short collection (2 hours), you may be asked to do this at the laboratory. For longer collections (such as 12 hours or 24 hours), you will do this at home. At the beginning of the time period, empty your bladder and discard that urine. Note the time. Collect all urine voided for the...