No fasting is required prior to this test. The test evaluates how your body processes sugar. A high level in your blood may indicate your body is not processing sugar effectively (positive test). If the results of this screen are positive, the woman may have the Glucose Tolerance Test performed.
A valve is a mechanism that opens and closes to control the flow of fluids. In a scientific context, fluids include both liquids and gases â any substance that can flow freely â and valves may use either. Valves control fluid flow in motors, plumbing, irrigation, pneumatic and hydraulic systems.
Volume of distribution (Vd) (definition) The volume necessary to hold all of the drug in the body at the same concentration which it is at in the blood/plasma. Not a real, physiological volume. High Vd indicates that the drug is widely distributed to extravascular tissues. Low Vd indicates that the drug is retained in the vascular compartment.