Flocculent matter in urine then possible causes: 1. When a urinary tract infection occurs, the urine can appear cloudy and can be accompanied by flocculent urine. This is because when bacteria enter the urine and infection occurs, the body’s white blood cells engulf the bacteria and therefore produce pus cells. At this point, the urine can become cloudy and flocculent, and may be accompanied by symptoms of frequent urination, urgency, and painful urination. However, if elderly patients can also have no related symptoms, it is recommended to further retain urine for routine examination, if a large number of white blood cells can be seen, it can indicate the presence of infection; 2. When crystalluria can also appear as flocculent precipitation in urine. In patients with high uric acid levels, flocculent material can appear when the urine encounters cold air or colder environments during urination. When the urine is heated, these flocs can disappear and can be identified, which are crystals or precipitates of uric acidity.