A creatinine blood test measures the level of creatinine in the blood. Creatinine is a waste product that forms when creatine breaks down.Creatine is a substance found in muscle.Creatinine levels help determine how well your kidneys function. Your kidneys are responsible for eliminating creatinine from the body when you urinate. When creatinine levels increase, your kidney function may be impaired.reatinine is a waste product that forms when creatine breaks down. Creatine is a substance found in muscle. Creatinine levels help determine how well your kidneys function.
vertical centering control. (electronics). The centering control provided in a television receiver or cathode-ray oscilloscope to shift the position of the entire image vertically in either direction on the screen. 1  Facebook. 2  Twitter.
vertical. adj. 1. at right angles to the horizon; perpendicular; upright Compare horizontal 1: a vertical wall. 2. extending in a perpendicular direction. 3. at or in the vertex or zenith; directly overhead.hese adjectives mean being at or approximately at right angles to the horizon or to level ground. Vertical and upright are often used to signify contrast with what is horizontal: wallpaper with vertical stripes; an upright column.