Is high urine red blood cells a kidney infection?

High urine red blood cells may be nephritis. High urine red blood cells may suggest hematuria, which is divided into physiological and pathological, and the pathological ones include nephritis.
Physiological: strenuous exercise, female menstruation period urine is contaminated, may appear hematuria, rest, menstruation period after the review will usually return to normal.
Pathologic: including urinary tract infection, stones, nephritis and so on. Urinary tract infection causes inflammatory reaction in the mucosa of the urinary tract, edema, bruising, destruction of small blood vessels and hematuria. Stones lead to tissue destruction and erosion causing bleeding and hematuria. Nephritis can also appear hematuria, etc., characterized by the whole process, painless, non-coagulation.
Patients with high urine erythrocytes should go to the hospital in a timely manner, under the guidance of a professional physician to clarify the cause and timely treatment.