LOINCActive

LOINC Code 19949-7: Oxyhemoglobin/Hemoglobin.total (8 hour maximum) in Arterial blood

19949-7 is a LOINC code used to identify Oxyhemoglobin/Hemoglobin.total (8 hour maximum) in Arterial blood 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. 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. 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

  • Oxyhemoglobin/Hemoglobin.total (8 hour maximum) in Arterial blood
  • Oxyhemoglobin/Hemoglobin.total
  • 1/3 day; 8 hours; 8HR; ABG; ART; Art bld; Art blood; Arterial; Arterial blood; Blood arterial; FO2Hb; Fractional hemoglobin; Haemoglobin; Haemoglobin oxygenated; Hb; HbO2; Hemoglobin oxygenated; Hgb; Lung; Mass Fraction; Maximum; O2 saturation; O2Hb; Oxygen saturation; Oxygenated haemoglobin; Oxygenated hemoglobin; Oxyhaemoglobin; OxyHgb; OxyHgb %; Percent; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Respiratory; SaO2; SO2; Tot; Totl

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

Oxyhemoglobin/Hemoglobin.total (8 hour maximum) in Arterial bloodOxyHgb 8h Max % BldAOxyhemoglobin/Hemoglobin.totalPULMMFr8H^maxBldA

Frequently asked questions

Code details

Code19949-7
SystemLOINC
Display nameOxyhemoglobin/Hemoglobin.total (8 hour maximum) in Arterial blood
DescriptionOxyhemoglobin/Hemoglobin.total
Short nameOxyHgb 8h Max % BldA
ComponentOxyhemoglobin/Hemoglobin.total
PropertyMFr
Timing8H^max
System (specimen)BldA
ScaleQn
ClassPULM
Example units%
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.54

Part names

Oxyhemoglobin/Hemoglobin.totalMFr8H^maxBldAQnMass fraction8HmaxBlood 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 19949-7 | HealthAssure