80828-7

LOINC 2.82

Pepsin A+Pepsinogen A [Mass/volume] in Lower respiratory specimen by Immunoassay

PepsinA+PepsinogenA Lower resp IA-mCnc

Definition

  • 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. [PMID: 16954956] 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.)

Component

  • Pepsin A+Pepsinogen A

Specimen / system

  • Respiratory system specimen.lower

Class

  • CHEM

Property

  • MCnc

Scale

  • Qn

Method

  • IA

Related names

  • 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

Index terms

  • 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