LOINCActiveBoth

LOINC Code 71853-6: SaO2% (Bld) [Pure mass fraction]

71853-6 is a LOINC code used to identify SaO2% (Bld) [Pure mass fraction] 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. It is commonly used with the system or sample type Bld.

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. It is commonly used with the system or sample type Bld.

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

  • Oxygen saturation [Pure mass fraction] in Blood
  • Oxygen saturation
  • Because of the confusion that occurs in countries that report results as both decimal fraction and percent, this property was created to represent decimal fractions that are reported without units.
  • Blood; Chemistry; Lung; O2; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; SaO2; SAT; Satn; SO2; tO2; WB; Whole blood

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

SaO2% (Bld) [Pure mass fraction]Oxygen saturation [Pure mass fraction] in BloodSaO2 DF BldOxygen saturationCHEMSaO2%, BloodMFr.DF

Frequently asked questions

Code details

Code71853-6
SystemLOINC
Display nameSaO2% (Bld) [Pure mass fraction]
DescriptionOxygen saturation
Short nameSaO2 DF Bld
ComponentOxygen saturation
PropertyMFr.DF
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.69

Consumer names

SaO2%, Blood

Part names

Oxygen saturationMFr.DFPtBldQnDecimal mass fractionPoint in time (spot)Blood

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 71853-6 | HealthAssure