Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business.

Prefix

ucum

Keywords

data identity and mapping general & upper measurement subject agnostic unit

Links

Homepage Repository

Contact

Simon Cox   0000-0002-3884-3420   dr-shorthair

Pattern for Local Unique Identifiers

Missing LUI pattern

Example Local Unique Identifiers

aBq   Resolve
%   Resolve
/A/s3/cg3/T3   Resolve
/g   Resolve
/m3   Resolve
Cel.d-1   Resolve
Em.s-2   Resolve
K2   Resolve
Wb   Resolve
dL/g   Resolve
dlm   Resolve
dlx   Resolve
g.cm-3   Resolve
kW/h   Resolve
m.s-2   Resolve
m/s   Resolve
m/s/d   Resolve
mmol.mL-1   Resolve
mol.L-1   Resolve
mol.um   Resolve
ng-1   Resolve
pA   Resolve
ug.mL-1   Resolve
umol.L-1   Resolve
us   Resolve

Example CURIEs

ucum:aBq
ucum:%
ucum:/A/s3/cg3/T3
ucum:/g
ucum:/m3
ucum:Cel.d-1
ucum:Em.s-2
ucum:K2
ucum:Wb
ucum:dL/g
ucum:dlm
ucum:dlx
ucum:g.cm-3
ucum:kW/h
ucum:m.s-2
ucum:m/s
ucum:m/s/d
ucum:mmol.mL-1
ucum:mol.L-1
ucum:mol.um
ucum:ng-1
ucum:pA
ucum:ug.mL-1
ucum:umol.L-1
ucum:us

Publications

1999 Units of measure in clinical information systems

References

Other https://units-of-measurement.org/

Contributors

• submitter Charles Tapley Hoyt   0000-0003-4423-4370   cthoyt

A summary of the relations in the Semantic Farm schema can be found here.

In Collection

FHIR External Terminologies

The metaregistry provides mappings between the Semantic Farm and other registries. There are 5 mappings to external registries for this resource with 5 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier aBq is used to demonstrate the providers available for Unified Code for Units of Measure. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.