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.
By Deb Russell. Definition: The vertical and horizontal lines that make up the quadrants of a coordinate plane. The vertical axis is usally referred to as the y axis and the horizontal axis is usually referred to as the x axis. Pronunciation: axiz.Also Known As: X and Y axis. Examples: Use the coordinate grid to plot the numbers on the x and y axis.y Deb Russell. Definition: The vertical and horizontal lines that make up the quadrants of a coordinate plane. The vertical axis is usally referred to as the y axis and the horizontal axis is usually referred to as the x axis. Pronunciation: axiz.