# UCUM units of measurement in Archetype Editor

**URL:** https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007
**Category:** Implementers (archive)
**Created:** [18 April 2011 09:14 UTC](https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007 "2011-04-18T09:14:30Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Leonardo\_Moretti](https://discourse.openehr.org/letter_avatar_proxy/v4/letter/l/b38774/32.png) [@Leonardo\_Moretti](https://discourse.openehr.org/u/Leonardo_Moretti)
#### Post date: [18 April 2011 09:14 UTC](https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007/1 "2011-04-18T09:14:30Z")

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Archetype Editor let’s to specify the list of units of measurement for a DV\_QUANTITY element (C\_DV\_QUANTITY constraint). Not all the UCUM units of measurement are selectable from Archetype Editor. For example [MET] (metabolic equivalent) is defined in UCUM specs ([http://aurora.regenstrief.org/~ucum/ucum.html#para-44](http://aurora.regenstrief.org/%7Eucum/ucum.html#para-44)) but I didn’t find it in Archetype Editor.  
Using Archetype Editor, how can I define a DV\_QUANTITY as [MET]?

Thanks  
leonardo