LOINCActiveBoth

LOINC Code 9347-6: pH combined acid (Gast fld)

9347-6 is a LOINC code used to identify pH combined acid (Gast fld) 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 pH.combined acid. It is commonly used with the system or sample type Gast fld.

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 pH.combined acid. It is commonly used with the system or sample type Gast fld.

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

What it does not mean

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

Key facts

  • pH combined acid of Gastric fluid
  • pH.combined acid
  • Acd; Acids; Chemistry; GAST; Gastric contents; Gastric fluid; Log molar concentration; pH Combined Ac; Point in time; Random; SmQn

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

pH combined acid (Gast fld)pH combined acid of Gastric fluidpH Combined Ac GastpH.combined acidCHEMpH combined acid, Stomach fluidLsCnc

Frequently asked questions

Code details

Code9347-6
SystemLOINC
Display namepH combined acid (Gast fld)
DescriptionpH.combined acid
Short namepH Combined Ac Gast
ComponentpH.combined acid
PropertyLsCnc
TimingPt
System (specimen)Gast fld
ScaleSemiQn
ClassCHEM
Example unitspH
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.75

Consumer names

pH combined acid, Stomach fluid

Part names

pH.combined acidLsCncPtGast fldSemiQnpH combined acidLog molar concentrationPoint in time (spot)Gastric fluid

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 9347-6 | HealthAssure