American Thoracic Society Documents 401 Figure 2. Algorithm forinitiating empiric antibi-otic therapy for hospital-acquired pneumonia (HAP),ventilator-associated pneu-monia (VAP), and health-care-associatedpneumonia(HCAP). Figure 2.
One milligram is one thousandth of a gram and one thousand micrograms. A milligram is generally abbreviated as mg. MICROGRAM. One microgram is one millionth of a gram and one thousandth of a milligram. It is usually abbreviated as mcg or ug. Mcg and ug are the same.
1 Answer. As metric units of measurement to quantify weight, 1000 micrograms (mcg) equal 1 milligram (mg). An IU (International Unit) is a unit of measurement for vitamins and other specific biologically active substances. The equivalency of one IU differs from substance to substance and is established by international agreement for each substance.