Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Proteinuria ?
    ### Response:
    Tests that measure the amount of creatinine in the blood will show whether a persons kidneys are removing wastes efficiently. Having too much creatinine in the blood is a sign that a person has kidney damage. The doctor can use the creatinine measurement to estimate how efficiently the kidneys are filtering the blood.
    