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
/A/s3/cg3/T3   Resolve
/g   Resolve
/m3   Resolve
%   Resolve
Cel.d-1   Resolve
dL/g   Resolve
dlm   Resolve
dlx   Resolve
Em.s-2   Resolve
g.cm-3   Resolve
K2   Resolve
kW/h   Resolve
m/s   Resolve
m.s-2   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
Wb   Resolve

Example CURIEs

ucum:aBq
ucum:/A/s3/cg3/T3
ucum:/g
ucum:/m3
ucum:%
ucum:Cel.d-1
ucum:dL/g
ucum:dlm
ucum:dlx
ucum:Em.s-2
ucum:g.cm-3
ucum:K2
ucum:kW/h
ucum:m/s
ucum:m.s-2
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
ucum:Wb

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 Bioregistry schema can be found here.

In Collection

FHIR External Terminologies

The metaregistry provides mappings between the Bioregistry and other registries. There are 4 mappings to external registries for this resource with 4 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. A guide for curating additional providers can be found here.