LOINC Code 19890-3: Carbon dioxide [Partial pressure] in Exhaled gas by Calculated --at end expiration

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 Carbon dioxide^at end expiration. It is commonly used with the system or sample type Exhl gas.

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
• Method: Calculated

What it does not mean

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

Key facts

• Carbon dioxide [Partial pressure] in Exhaled gas by Calculated --at end expiration
• Carbon dioxide^at end expiration
• ** End tidal is measurement of CO2 % at the end of expiration. Fraction is directly measured, but the PRES is calculated using Barometric Pressure (% * mmHg).
• Breath; Calc; Calculation; Carbonic anhydride; cO2; End tidal pCO2; ETCO2; ExG; Exhaled gas; Exhaled gas (=breath); Exp; Gases; Lung; Partial pressure; PCO2; PetCO2; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory

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