LOINCActiveBoth

LOINC Code 82261-9: Measured activity metabolic rate/Standard RMR [Relative energy/Time]

82261-9 is a LOINC code used to identify Measured activity metabolic rate/Standard RMR [Relative energy/Time] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Activity metabolic rate/Standard resting metabolic rate. It is commonly used with the system or sample type ^Patient.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Activity metabolic rate/Standard resting metabolic rate. It is commonly used with the system or sample type ^Patient.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: Measured

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Measured activity metabolic rate/Standard RMR [Relative energy/Time]
Activity metabolic rate/Standard resting metabolic rate
The measured metabolic equivalent of task (MET) calculated based on the measured exercise metabolic rate and the standard resting metabolic rate (RMR). The standard RMR is defined as 3.5 mL O2/kg/min. The exercise metabolic rate can be measured (this term), estimated [LOINC82262-7], or reported [LOINC: 82263-5]. Additionally, METs can be further adjusted based on patient demographics, such as age, sex and BMI [LOINC: 82271-8].
1 minute; Act metab rate; Activ; Activity; Actvty; Average; Avg; Basal Metabolic Rate; BMR; CLIN; EE; Energy expenditure; Exercise; Movements; QNT; Quan; Quant; Quantitative; RMR; Stand RMR; Stndrd RMR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Measured activity metabolic rate/Standard RMR [Relative energy/Time]Meas Act metab rate/Standard RMRActivity metabolic rate/Standard resting metabolic rateCLINAverage Activity metabolic rate/Standard Resting Metabolic Rate in 1 Minute, MeasuredRelEngRat1M^mean

Frequently asked questions

Code details

Code82261-9
SystemLOINC
Display nameMeasured activity metabolic rate/Standard RMR [Relative energy/Time]
DescriptionActivity metabolic rate/Standard resting metabolic rate
Short nameMeas Act metab rate/Standard RMR
ComponentActivity metabolic rate/Standard resting metabolic rate
PropertyRelEngRat
Timing1M^mean
System (specimen)^Patient
ScaleQn
MethodMeasured
ClassCLIN
Example units[MET]
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.72

Consumer names

Average Activity metabolic rate/Standard Resting Metabolic Rate in 1 Minute, Measured

Part names

Activity metabolic rate/Standard resting metabolic rateRelEngRat1M^mean^PatientQnMeasuredRelative Energy/Time

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 82261-9 | HealthAssure