LOINC Code 74803-8: Lactose challenge (breath test) (Exhl gas) [Interp]

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 Lactose challenge. 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
• Order vs observation: Observation

What it does not mean

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

Key facts

• Lactose challenge (breath test) [Interpretation] in Exhaled gas
• Lactose challenge
• The overall interpretation for a hydrogen or methane breath test (HBT) post dose a lactose sugar challenge. An HBT is performed to diagnose a lactose malabsorption or abnormal growth of bacteria in the intestine.
• Breath; CHEMISTRY.CHALLENGE TESTING; ExG; Exhaled gas; Exhaled gas (=breath); Gases; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Lactose BT; LTT; Nominal; Point in time; Random

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