def compute_score_for_kidneys(creatinine_level: float) -> int:
    """Computes score based on Creatinine level (unit is mg/dl)."""
    if creatinine_level >= 5.0:
        return 4
    if creatinine_level >= 3.5:
        return 3
    if creatinine_level >= 2.0:
        return 2
    if creatinine_level >= 1.2:
        return 1
    return 0