Appendicitis does not usually cause urinary occult blood.
Appendicitis belongs to the digestive system inflammation, the infection site occurs in the digestive tract, and there is no direct connection with the urinary system, theoretically, appendicitis will not directly cause urinary occult blood. Urinary occult blood is often caused by urinary system diseases such as urinary stones, urinary tumors, nephritis or urethral injury.
However, in rare cases, if the acute purulent appendicitis in posterior ileum position, the location of inflammation is close to the right side of the ureter, it may be through the spread of inflammation or the exudation of inflammation, directly stimulate the ureter, and in a few cases, there may be a positive urinary occult blood.
If the urine occult blood is positive, the urine routine should be checked again to make sure there is no false positive such as contamination, if the result is still positive, the condition should be examined by a professional physician to evaluate the condition and be treated by a doctor.