Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Proteinuria ?
    ### Response:
    Proteinuriaalso called albuminuria or urine albuminis a condition in which urine contains an abnormal amount of protein. Albumin is the main protein in the blood. Proteins are the building blocks for all body parts, including muscles, bones, hair, and nails.
    