What are mucus threads?
Mucus is usually found in urinary sediment and this forms mucus threads. The reason for the presence of this mucus is not understood by medical personnel but some think that the mucus is to help protect us against infections. Mucus is thick and can coat the walls of the urinary tract and protect from the harmful effects of chemical interactions. The cells are found from the top of the urinary tract, the kidneys, down to the lower part of the tract, the bladder. In older people there seems to be more mucus in the lower section of the urinary tract and doesn’t seem to be harmful.
"This is a common finding in urine since the entire urine system is filled with mucus."