LOINCActive

LOINC Code 19971-1: Fractional oxyhemoglobin in Arterial blood --pre treatment

19971-1 is a LOINC code used to identify Fractional oxyhemoglobin in Arterial blood --pre treatment 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 Oxyhemoglobin/Hemoglobin.total^pre treatment. It is commonly used with the system or sample type BldA.

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 Oxyhemoglobin/Hemoglobin.total^pre treatment. 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

What it does not mean

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

Key facts

  • Fractional oxyhemoglobin in Arterial blood --pre treatment
  • Oxyhemoglobin/Hemoglobin.total^pre treatment
  • ABG; ART; Art bld; Art blood; Arterial; Arterial blood; Before; Blood arterial; FO2Hb; Fractional hemoglobin; Haemoglobin; Haemoglobin oxygenated; Hb; HbO2; Hemoglobin oxygenated; Hgb; Lung; Mass Fraction; O2 saturation; O2Hb; Oxygen saturation; Oxygenated haemoglobin; Oxygenated hemoglobin; Oxyhaemoglobin; OxyHgb; OxyHgb %; Percent; Point in time; pre Tx; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; SaO2; SO2; Tot; Totl; Tx

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

Fractional oxyhemoglobin in Arterial blood --pre treatmentOxyHgb pre Tx % BldAOxyhemoglobin/Hemoglobin.total^pre treatmentPULMMFrPtBldA

Frequently asked questions

Code details

Code19971-1
SystemLOINC
Display nameFractional oxyhemoglobin in Arterial blood --pre treatment
DescriptionOxyhemoglobin/Hemoglobin.total^pre treatment
Short nameOxyHgb pre Tx % BldA
ComponentOxyhemoglobin/Hemoglobin.total^pre treatment
PropertyMFr
TimingPt
System (specimen)BldA
ScaleQn
ClassPULM
Example units%
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.30

Part names

Oxyhemoglobin/Hemoglobin.total^pre treatmentMFrPtBldAQnMass fractionPoint 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.