Version 2.73

2708-6Oxygen saturation in Arterial bloodActive

Part Description

LP21258-6   Oxygen saturation
Oxygen saturation (sO2) is defined as the ratio of oxyhemoglobin to "active" hemoglobin (oxyhemoglobin + deoxyhemoglobin). Some say the term oxygen saturation has been erroneously redefined with a denominator of "total" instead of "active" hemoglobin, an ambiguity that can sometimes create confusion when viewing reported values from different instruments (Anesth Analg. 2007 Dec;105(6 Suppl):S5-9.) Oxygen saturation is commonly measured by blood gas analyzers and pulse oximetry. Source: Regenstrief LOINC

Fully-Specified Name

Oxygen saturation

Additional Names

Short Name
SaO2 % BldA
Display Name
SaO2% (BldA) [Mass fraction]
Consumer Name Alpha
SaO2%, Blood

Associated Observations

This panel contains all of the "Special circumstances" LOINC codes that are used to report the specific context during which a particular measurement was taken, where that context may affect the measurement value. Circumstances that can affect measurement of certain variables include when the patient is asleep, in pain, crying, febrile, or during a period of apnea. This panel is attached to the generic LOINC code for each measurement so that the circumstance under which the measurement was taken can be reported along with the primary result.

LOINC Name R/O/C Cardinality Example UCUM Units
89263-8 Special circumstances associated observations panel
Indent10224-4 Hemodynamic method special circumstances
Indent55285-1 Glasgow coma score special circumstances
Indent55416-2 Oxymetry special circumstances
Indent8304-8 Body height special circumstances
Indent8337-8 Body weight special circumstances
Indent9278-3 Breath rate special circumstances
Indent9848-3 Body temperature special circumstances
Indent9855-8 Blood pressure special circumstances
Indent89299-2 Heart rate special circumstances

Basic Attributes

First Released
Version 1.0
Last Updated
Version 2.73
Order vs. Observation
Common US Lab Results Rank

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help Functional oxygen saturation (SO2) Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Member of these Panels

LOINC Long Common Name
52743-2 Continuity Assessment Record and Evaluation (CARE) tool - Acute Care
52748-1 Continuity Assessment Record and Evaluation (CARE) tool - Home Health Admission
52746-5 Continuity Assessment Record and Evaluation (CARE) tool - Interim
52744-0 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Admission
52745-7 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Discharge
100847-3 Gas and ammonia panel - Arterial blood
93685-6 Gas and Carbon monoxide and Electrolytes panel - Arterial blood
24341-0 Gas and Carbon monoxide panel - Arterial blood
99548-0 Gas and electrolytes panel - Arterial blood
24336-0 Gas panel - Arterial blood
75885-4 IEEE 11073 Rosetta panel
84428-2 National EMS Information System - version 3 set
87825-6 National Trauma Data Standard - version 2018 set
89544-1 Pulmonary Embolism Rule-out Criteria panel PERC
89694-4 Pulmonary Embolism Severity Index panel [PESI]

Member of these Groups

LG33051-0 Oxygen saturation|MFr|Pt|Chal:None

Language Variants Get Info

zh-CNChinese (China)
nl-NLDutch (Netherlands)
zuurstofverzadiging:massafractie:moment:arterieel bloed:kwantitatief:
et-EEEstonian (Estonia)
Hapnikuga küllastatus:MFr:Pt:aB:Qn:
fr-BEFrench (Belgium)
Saturation en oxygène:Fraction de masse:Temps ponctuel:Sang artériel:Quantitatif:
fr-CAFrench (Canada)
Saturation en oxygène:Fraction de masse:Temps ponctuel:Sang artériel:Quantitatif:
fr-FRFrench (France)
Oxygène saturation:Fraction massique:Ponctuel:Sang artériel:Numérique:
de-DEGerman (Germany)
Sauerstoffsättigung:Massenfraktion:Zeitpunkt:Blut arteriell:Quantitativ:
it-ITItalian (Italy)
Saturazione dell'ossigeno:MFr:Pt:Sangue art:Qn:
pl-PLPolish (Poland)
wysycenie tlenem:Ułamek masy:Punkt w czasie:Krew tętnicza:ilościowy:
pt-BRPortuguese (Brazil)
Saturação de Oxigênio:MFr:Pt:SgArt:Qn:
ru-RURussian (Russian Federation)
Кислородом сатурация:МассДол:ТчкВрм:КрА:Колич:
es-ARSpanish (Argentina)
saturación de oxígeno:fracción de sustancia:punto en el tiempo:sangre arterial:cuantitativo:
es-MXSpanish (Mexico)
Saturación de oxígeno:Fracción de masa:Punto temporal:Sangre arterial:Cuantitativo:
es-ESSpanish (Spain)
Saturación de Oxígeno:Fracción de masa:Punto temporal:Sangre arterial:Qn:
tr-TRTurkish (Turkey)
Oksijen satürasyonu:KütlFr:Zmlı:KanArt:Kant:

Example Units

Unit Source
% eCHN
% Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info