LOINC Code 74791-5: Lactulose challenge (hydrogen 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 Lactulose 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

• Lactulose challenge (hydrogen breath test) [Interpretation] in Exhaled gas
• Lactulose challenge
• The overall interpretation for a hydrogen breath test (HBT) post dose a lactulose sugar challenge. An HBT is performed to diagnose a malabsorption or intolerance of a sugar 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; Lactulose HBT; 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