What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 81452-5: Residual volume --pre bronchodilation

Name: LOINC Code 81452-5: Residual volume --pre bronchodilation
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:05.775Z

81452-5 is a LOINC code used to identify Residual volume --pre bronchodilation 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 Volume.residual^pre bronchodilation. It is commonly used with the system or sample type Respiratory system.

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 Volume.residual^pre bronchodilation. It is commonly used with the system or sample type Respiratory system.

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

What it does not mean

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

Key facts

Residual volume --pre bronchodilation
Volume.residual^pre bronchodilation
Before; Breathing; Lung; Lungs; Point in time; pre BD; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Residual vol; Respiratory; RS; RV; Vol; Volume

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

Residual volume --pre bronchodilationResidual vol pre BDVolume.residual^pre bronchodilationPULMVolPtRespiratory system

Frequently asked questions

Code details

Code81452-5

SystemLOINC

Display nameResidual volume --pre bronchodilation

DescriptionVolume.residual^pre bronchodilation

Short nameResidual vol pre BD

ComponentVolume.residual^pre bronchodilation

PropertyVol

TimingPt

System (specimen)Respiratory system

ScaleQn

ClassPULM

Example unitsL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.56

Last changed2.56

Part names

Volume.residual^pre bronchodilationVolPtRespiratory systemQnVolumePoint in time (spot)

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.