LOINC Code 64028-4: Post-bronchodilator forced expiratory volume in 1 second (FEV1) attempt [PhenX]

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 Post-bronchodilator forced expiratory volume in 1 second attempt. It is commonly used with the system or sample type ^Patient.

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: TRIAL
• Method: PhenX

What it does not mean

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

Key facts

• Post-bronchodilator forced expiratory volume in 1 second (FEV1) attempt [PhenX]
• Post-bronchodilator forced expiratory volume in 1 second attempt
• 2nd; After; Finding; Findings; i; Nominal; Point in time; Post-bronch FEV1 attempt; PST; Random; Vol

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