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LOINC Code 80828-7: Pepsin A+Pepsinogen A IA (Lower resp) [Mass/Vol]

80828-7 is a LOINC code used to identify Pepsin A+Pepsinogen A IA (Lower resp) [Mass/Vol] 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: Both
  • Method: IA

What it does not mean

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

Key facts

Pepsin A+Pepsinogen A [Mass/volume] in Lower respiratory specimen by Immunoassay
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. (One unit of pepsin A=0.1ng/ml pepsin A is a measure of concentration (ng/ml) expressed in an arbitrarily defined unit.)
Breathing; Chemistry; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; k213; Level; Low; Lower resp; Lungs; Mass concentration; MEIA; nSus s Pepsin, Swine; PepsinA+PepsinogenA; PG; Point in time; QNT; Quan; Quant; Quantitative; Random; Rk213; RS; Spec; SUDS; 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 IA (Lower resp) [Mass/Vol]Pepsin A+Pepsinogen A [Mass/volume] in Lower respiratory specimen by ImmunoassayPepsinA+PepsinogenA Lower resp IA-mCncPepsin A+Pepsinogen ACHEMPepsin A+Pepsinogen A, Lower respiratoryMCnc

Frequently asked questions

Code details

Code80828-7
SystemLOINC
Display namePepsin A+Pepsinogen A IA (Lower resp) [Mass/Vol]
DescriptionPepsin A+Pepsinogen A
Short namePepsinA+PepsinogenA Lower resp IA-mCnc
ComponentPepsin A+Pepsinogen A
PropertyMCnc
TimingPt
System (specimen)Respiratory system specimen.lower
ScaleQn
MethodIA
ClassCHEM
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Pepsin A+Pepsinogen A, Lower respiratory

Part names

Pepsin A+Pepsinogen AMCncPtRespiratory system specimen.lowerQnIAMass ConcentrationPoint in time (spot)Lower respiratory specimenImmunoassay

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.

LOINC Code 80828-7 | HealthAssure