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.

LOINC

LOINC Code 40449-1: Deprecated Oxygen saturation in Capillary blood by Oximetry --resting

Name: LOINC Code 40449-1: Deprecated Oxygen saturation in Capillary blood by Oximetry --resting
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:27.145Z

40449-1 is a LOINC code used to identify Deprecated Oxygen saturation in Capillary blood by Oximetry --resting 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 Oxygen saturation^resting. It is commonly used with the system or sample type BldC.

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 Oxygen saturation^resting. It is commonly used with the system or sample type BldC.

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: DEPRECATED
Method: Oximetry

What it does not mean

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

Key facts

Deprecated Oxygen saturation in Capillary blood by Oximetry --resting
Oxygen saturation^resting
Blood - capillary; Cap bld; Cap blood; Capillary bld; Capillary blood; Finger stick; Hemodynamics; HEMODYNAMICS.MOLEC; Mass Fraction; O2; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; SaO2; SAT; Satn; SO2; tO2

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

Deprecated Oxygen saturation in Capillary blood by Oximetry --restingDeprecated SaO2% Resting BldC OximetryOxygen saturation^restingHEMODYN.MOLECMFrPtBldC

Frequently asked questions

Code details

Code40449-1

SystemLOINC

Display nameDeprecated Oxygen saturation in Capillary blood by Oximetry --resting

DescriptionOxygen saturation^resting

Short nameDeprecated SaO2% Resting BldC Oximetry

ComponentOxygen saturation^resting

PropertyMFr

TimingPt

System (specimen)BldC

ScaleQn

MethodOximetry

ClassHEMODYN.MOLEC

Example units%

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.15

Last changed2.36

Part names

Oxygen saturation^restingMFrPtBldCQnOximetryMass fractionPoint in time (spot)Blood capillary

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.