What is the term for urine collected from a patient in the middle of urination?

The term "midstream" refers specifically to a method of urine collection that involves gathering urine from a patient during the middle portion of their urination. This technique is used to reduce contamination from the initial and final portions of urine, which may contain bacteria or other substances that are not representative of the urine produced by the bladder. By collecting the sample midstream, healthcare providers can obtain a cleaner, more accurate specimen for analysis. This is particularly important in medical settings where urine tests are used to diagnose infections or other conditions.

Other terms listed, such as collection, urinating, and final stream, do not accurately describe this specific collection technique. "Collection" is a vague term that lacks the specificity needed to identify the midstream approach. "Urinating" refers to the act of expelling urine but does not indicate any particular method of sample collection. "Final stream" implies that the urine collected is from the last portion of urination, which would not be appropriate for accurate diagnostic purposes. Thus, midstream is the correct and precise term used in medical contexts for this type of urine sample collection.