Firstly, you need to take a medical history to rule out pseudohaematuria caused by disturbances such as medication, menstruation or bleeding haemorrhoids. Next, you can go to the hospital to have the anterior, middle and posterior segments of urine examined microscopically to determine the site of the lesion. Then, depending on the site of the lesion combined with the medical history, you can choose imaging tests such as ultrasound or CT to rule out diseases such as stones and tumours.