C	C89509	NCPDP StrengthUnitOfMeasure Terminology	C71205	Microgram per Day	Microgram per Day	A unit of mass flow rate equivalent to the rate at which one millionth of a gram of matter crosses a given surface or is delivered to a given object or space over a period of time equal to twenty four hours. Microgram per 24 hours is also a dose administration rate unit equal to the rate at which one millionth of a gram of a product is administered per unit of time equal to twenty four hours.