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LOINC Code 80829-5: Pepsin A+Pepsinogen A Nar (Lower resp) [Interp]

80829-5 is a LOINC code used to identify Pepsin A+Pepsinogen A Nar (Lower resp) [Interp] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Pepsin A+Pepsinogen A. It is commonly used with the system or sample type Respiratory system specimen.lower.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Pepsin A+Pepsinogen A. It is commonly used with the system or sample type Respiratory system specimen.lower.

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

Pepsin A+Pepsinogen A [Interpretation] in Lower respiratory specimen Narrative
Pepsin A+Pepsinogen A
The presence of gastric pepsin A in a patient's airway is a marker for aspiration and assists in the diagnosis of gastroesophageal reflux. Chronic aspiration of gastric contents may worsen lung disease in premature infants, or other mechanically ventilated patients. [PMID16954956] This assay detects both pepsin A and pepsinogen A and does not differentiate between the two. A level of less than 3 is considered in range.
Breathing; Chemistry; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; k213; Low; Lower resp; Lungs; Narrative; nSus s Pepsin, Swine; PepsinA+PepsinogenA; PG; Point in time; Random; Report; Rk213; RS; Spec; Total pepsinogens

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

Pepsin A+Pepsinogen A Nar (Lower resp) [Interp]Pepsin A+Pepsinogen A [Interpretation] in Lower respiratory specimen NarrativePepsinA+PepsinogenA Lower resp-ImpPepsin A+Pepsinogen ACHEMInterpretation of Pepsin A+Pepsinogen A test result, Lower respiratoryImp

Frequently asked questions

Code details

Code80829-5
SystemLOINC
Display namePepsin A+Pepsinogen A Nar (Lower resp) [Interp]
DescriptionPepsin A+Pepsinogen A
Short namePepsinA+PepsinogenA Lower resp-Imp
ComponentPepsin A+Pepsinogen A
PropertyImp
TimingPt
System (specimen)Respiratory system specimen.lower
ScaleNar
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.77

Consumer names

Interpretation of Pepsin A+Pepsinogen A test result, Lower respiratory

Part names

Pepsin A+Pepsinogen AImpPtRespiratory system specimen.lowerNarImpression/interpretation of studyPoint in time (spot)Lower respiratory specimen

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.