Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Hematuria (Blood in the Urine) ?
    ### Response:
    Most people with microscopic hematuria do not have symptoms. People with gross hematuria have urine that is pink, red, or cola-colored due to the presence of red blood cells (RBCs). Even a small amount of blood in the urine can cause urine to change color. In most cases, people with gross hematuria do not have other symptoms.
    