International Unit ( Abbreviation IE or IE, English international unit, IU ) is a measure used in medicine for many drugs such as heparin and insulin. It is defined either by reference preparations or internationally agreed standards and is used for reproducible dosing of the preparations of their impacts (and not its amount of substance ).
The International Unit is not part of the SI units. For each substance, the relationship between international units and mass or international units, amount of substance is different. For many substances, these ratios are chosen arbitrarily. They are defined by the World Health Organization.
The International unit is the International Unit ( IU ) in English and the Unité International (UI ) in French.
The International Unit should not be confused with the enzyme unit (U).
Some such conditions: