Person—microalbumin level (measured), albumin/creatinine ratio N[NN].N

Identifying and definitional attributes

Metadata item type:Data Element
Short name:Microalbumin level—albumin/creatinine ratio (measured)
METeOR identifier:270339
Registration status:Health, Standard 01/03/2005
Definition:A person's microalbumin level, measured as an albumin/creatinine ratio.

Data element concept attributes

Identifying and definitional attributes

Data element concept:Person—microalbumin level
METeOR identifier:269773
Registration status:Health, Standard 01/03/2005
Definition:A person's microalbumin level in a spot test, 24 hour or timed collection.
Context:Public health, health care and clinical settings.
Object class:Person
Property:Microalbumin level

Value domain attributes

Identifying and definitional attributes

Value domain:Albumin/creatinine ratio N[NN].N
METeOR identifier:310475
Registration status:Health, Standard 21/09/2005
Definition:A ratio of the amount of albumin to the amount of creatinine in milligrams per millimole (mg/mmol).

Representational attributes

Representation class:Ratio
Data type:Number
Format:N[NN].N
Maximum character length:4
Supplementary values:
ValueMeaning
999.9Not stated/inadequately described
Unit of measure:Milligram per millimole (mg/mmol)
Unit of measure precision:1

Data element attributes

Collection and usage attributes

Collection methods:

Measurement of microalbumin levels should be carried out by laboratories, or practices, which have been accredited to perform these tests by the National Association of Testing Authority.

Microalbumin is not detected by reagent strips for urinary proteins, and requires immunoassay.

As urinary albumin varies with posture and exercise it is important to collect the urine under very standard conditions; short-term (2 hours) during rest, overnight (approximately 8 hours) or an early morning sample. For screening purposes an early morning urine specimen is adequate, and if the albumin/creatinine ratio is found to be greater than 3.5 mg/mmol then a timed overnight sample should be obtained for estimation of the albumin excretion rate.

Test for albuminuria by measuring microalbumin in timed or first morning urine sample.

The results considered elevated are

  • spot urine 30 to 300 mg/L; or
  • timed urine (24 hour collection) 20 to 200 µg/min.

Source and reference attributes

Submitting organisation:National Diabetes Data Working Group
Origin:National Diabetes Outcomes Quality Review Initiative (NDOQRIN) data dictionary

Relational attributes

Related metadata references:

See also Laboratory standard—upper limit of normal range for microalbumin, albumin/creatinine ratio N[NN].N Health, Standard 01/03/2005

Supersedes Microalbumin - units, version 1, DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (16.3 KB)

Supersedes Microalbumin/protein - measured, version 1, DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (16.5 KB)

Has been superseded by Person—kidney damage marker, urine albumin/creatinine ratio N[NN].N Health, Candidate 15/05/2017

Implementation in Data Set Specifications:
All attributes +

Diabetes (clinical) DSS Health, Superseded 21/09/2005

DSS specific attributes +

Diabetes (clinical) NBPDS Health, Standard 21/09/2005

DSS specific attributes +