LOINCActiveBoth

LOINC Code 2744-1: pH (BldA)

2744-1 is a LOINC code used to identify pH (BldA) 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. It is commonly used with the system or sample type BldA.

Reviewed by HealthAssure Clinical TeamUpdated 25 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. It is commonly used with the system or sample type BldA.

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 of Arterial blood
  • pH
  • ABG; ART; Art bld; Art blood; Arterial; Arterial blood; Blood arterial; Chemistry; Kidney; Log molar concentration; Lung; Nephrology; Point in time; Pulmonary; Pulmonology; Random; Renal; Respiratory; 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 (BldA)pH of Arterial bloodpH BldApHCHEMpH, BloodLsCnc

Frequently asked questions

Code details

Code2744-1
SystemLOINC
Display namepH (BldA)
DescriptionpH
Short namepH BldA
ComponentpH
PropertyLsCnc
TimingPt
System (specimen)BldA
ScaleSemiQn
ClassCHEM
Example unitspH
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

pH, Blood

Part names

pHLsCncPtBldASemiQnLog molar concentrationPoint in time (spot)Blood arterial

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 2744-1 | HealthAssure