<s>[INST] I am a 35 year female, healthy. the past 3 years Ive been getting string like white substances every time I urinate. It is not painful. Ive gotten a bladder infection every 6 months for the past 3 years. What could be the cause? How do I get rid of the white substance in my urine? [/INST] Hi, welcome to Chat Doctor forum. Since you are healthy, and this issue is there for 3 years, it is unlikely to have a serious underlying cause(I guess you have no hypertension/edema on legs/red colored urine/increase or decreased urine output).Anyhow, you can do a urine routine examination. Depending on the result, you may need some blood tests like complete blood count/renal function test. The first thing to be sure before going for these investigations is that, the substances are not coming from your vagina, and get mixed up with urine. I hope you will find this information useful. Thank you. </s>