LOINC Code 71842-9: SaO2% Calculated from oxygen partial pressure (BldC) [Pure mass fraction]

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 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: ACTIVE
• Order vs observation: Observation
• Method: Calculated from oxygen partial pressure

What it does not mean

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

Key facts

• Oxygen saturation [Pure mass fraction] Calculated from oxygen partial pressure in Capillary 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 - capillary; Calc; calc from oxygen partial pressure; Calculation; Cap bld; Cap blood; Capillary bld; Capillary blood; Chemistry; Finger stick; from pO2; Lung; O2; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; 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

Frequently asked questions