Urine test occult blood weak positive can not take drugs for the time being, it is recommended to drink more water, more urination. For occult blood suspicious must pay enough attention to find the cause of occult blood. Occult blood of any degree and any age must be ruled out whether there is the possibility of urinary tract tumors. It is recommended that you have an ultrasound of the kidneys, ureters, and bladder in a urine-holding condition, which can determine whether there is a tumor, and an ultrasound that can find out whether there are urinary stones. The most common cause of occult blood is urinary tract infection, but there may also be urethral polyps, urethral caruncle or urinary tract tuberculosis. For occult blood, it is important to find the cause before effective treatment can be carried out.