LOINC Code 60818-2: Gastric-end tidal pCO2 gap

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.gastric-Carbon dioxide.airway^end of expiration. It is commonly used with the system or sample type Stomach+Airway.

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
• Method: Gastric tonometry

What it does not mean

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

Key facts

• Gastric-end tidal pCO2 gap
• Carbon dioxide.gastric-Carbon dioxide.airway^end of expiration
• Difference (gap) between gastric mucosal (PgCO2) and end-tidal (EtCO2) partial pressures of carbon dioxide. PgCO2 is measured by gastric tonometry.
• Carbonic anhydride; cO2; end expir; Exp; Gastric CO2-ET CO2; Gastro; Gastroenterology; GI; Glaucoma testing; Point in time; QNT; Quan; Quant; Quantitative; Random; Tonometry

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