What Causes Blood Clots in the Urine Stream During a Urinary Tract Infection?

A urinary tract infection causes inflammation, or blood rushing to the site of the infection, which can enter the urine stream, according to the University of Iowa Hospitals and Clinics. In addition to hematuria, or blood in urine, a burning sensation, frequent urination, lower abdominal pain and fatigue can indicate a urinary tract infection, states WebMD. Though blood clots do not usually indicate a serious problem, individuals should seek immediate attention as they can be symptoms of more serious conditions.

Urinary tract infections are especially common in women, due to the relative proximity of the urethra and anus, explains WebMD. The condition affects half of all women at least once in their lifetimes, according to some estimates. Hematuria accompanied with fever or chills can indicate that the infection has spread to the kidney.

Patients should take note of the size, shape and color of the blood clots as well as the color of the urine, states WebMD. Brown, red or orange discoloration in the urine can be signs of blood. Patients should also report any painful urination and whether the blood appeared early, late or throughout the urine stream.

Blood in the urine can also indicate a kidney or bladder stone, swollen prostate, obstructed urine flow, tumor or kidney disease, according to WebMD. Health care providers can perform blood tests or urinalysis or use kidney or bladder imaging to rule out other conditions.