Units of Presentation
Definition and Purpose
Units of presentation are used when it is necessary to describe strength or quantity in terms of a countable entity, rather than a unit of measurement. For example, the strength of a solution can be expressed as a concentration using standard units of measurement, such as “0.5 mg/mL” or “5 mg per 100 mL”. However, the strength of a modified-release tablet is expressed in terms of each tablet, for example “10 mg per tablet”, and units of presentation (in this case ‘tablet’) are used in such situations. Similarly, where the quantity of product in a pre-filled syringe needs to be expressed, for example “10 mL per syringe”, a unit of presentation (‘syringe’) is also used.
While a unit of presentation will often share the same name as another concept such as a basic dose form or container, it is important that a separate list of terms is maintained for units of presentation. This is because they are used in a different way, and have their own definitions and identifiers.
Source: EDQM
Examples
Tablet, blister, ampoule
For more examples, see Units of Presentation Examples
Usage
Current usage: None
Future usage: Manufactured Item, Administrable Products, Ingredient