LOINC Code 53809-0: Oxygen.alveolar - arterial [Partial pressure difference] adjusted to patient's actual temperature Respiratory system

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.alveolar - arterial^^adjusted to patient's actual temperature. It is commonly used with the system or sample type Respiratory system.

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.alveolar - arterial [Partial pressure difference] adjusted to patient's actual temperature Respiratory system
• Oxygen.alveolar - arterial^^adjusted to patient's actual temperature
• A-a gradient; A-ADO2; adj; ALV; Breathing; Lung; Lungs; O2; O2 A-a; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; S prime; Temp; temp adj; 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