Version 2.77

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

Reference Information

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

Fully-Specified Name

Oxygen saturation

Additional Names

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

Associated Observations

89263-8 Special circumstances associated observations panel

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 Test Rank Get Info

Member of these Panels

LOINC Long Common Name
52745-7 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Discharge
52743-2 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Acute Care
52748-1 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Home Health Admission
52746-5 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Interim
52744-0 Deprecated Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Admission
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 Get Info

LOINC Group Group Name
LG33051-0 Oxygen saturation|MFr|Pt|Chal:None

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Sauerstoffsättigung:Massenfraktion:Zeitpunkt:Blut arteriell:Quantitativ:
Synonyms: O2-Sättigung
de-AT German (Austria) Synonyms: O2-Sättigung art.
es-AR Spanish (Argentina) saturación de oxígeno:fracción de sustancia:punto en el tiempo:sangre arterial:cuantitativo:
es-ES Spanish (Spain) Saturación de Oxígeno:Fracción de masa:Punto temporal:Sangre arterial:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Saturación de oxígeno:Fracción de masa:Punto temporal:Sangre arterial:Cuantitativo:
et-EE Estonian (Estonia) Hapnikuga küllastatus:MFr:Pt:aB:Qn:
Synonyms: Arteriaalne veri Juhuslik Kvantitatiivne
fr-CA French (Canada) Saturation en oxygène:Fraction de masse:Temps ponctuel:Sang artériel:Quantitatif:
fr-FR French (France) Oxygène saturation:Fraction massique:Ponctuel:Sang artériel:Numérique:
fr-BE French (Belgium) Saturation en oxygène:Fraction de masse:Temps ponctuel:Sang artériel:Quantitatif:
Synonyms: O2 SatO2
it-IT Italian (Italy) Saturazione dell'ossigeno:MFr:Pt:Sangue art:Qn:
Synonyms: Chimica Frazione di massa Punto nel tempo (episodio) Sangue arterioso
nl-NL Dutch (Netherlands) zuurstofverzadiging:massafractie:moment:arterieel bloed:kwantitatief:
pl-PL Polish (Poland) Wysycenie tlenem:frakcja masowa:punkt w czasie:krew tętnicza:ilościowy:
pt-BR Portuguese (Brazil) Saturação de Oxigênio:MFr:Pt:SgArt:Qn:
Synonyms: ; O2 %; SO2; tO2; Mass fraction; Percent; Point in time; Random; Blood; Blood arterial; ART; Bld art; Bld arterial; Blood art; Art blood; Art bld; AcG; Quantitative; QNT; Quant; Quan; Satn; SAT; HEMODYNAMICS.MOLEC; HEMODYNAMICS.MOLEC; SaO2
ru-RU Russian (Russian Federation) Кислородом сатурация:МассДол:ТчкВрм:КрА:Колич:
Synonyms: Количественный Кровь артериальная Массовая доля Насыщение кислородом Точка во времени;Момент
tr-TR Turkish (Turkey) Oksijen satürasyonu:KütlFr:Zmlı:KanArt:Kant:
Synonyms: Oksijen doymuşluğu
zh-CN Chinese (China) 氧饱和度:质量分数:时间点:动脉全血:定量型:
Synonyms: MFr O2;tO2;总氧;氧气 SaO2 动脉血 动脉血O2饱和度 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 饱和 饱和状态 饱和程度

Example Units

Unit Source
% Example UCUM Units
% eCHN

LOINC Terminology Service (API) using HL7® FHIR® Get Info

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