LOINC Code 40591-0: Deprecated Fractional oxyhemoglobin by Pulse oximetry --post exercise

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^post exercise. 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: DEPRECATED
• Order vs observation: Observation
• Method: Pulse oximetry

What it does not mean

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

Key facts

• Deprecated Fractional oxyhemoglobin by Pulse oximetry --post exercise
• Oxyhemoglobin/Hemoglobin.total^post exercise
• The component for this term oxyhemoglobin/hemoglobin.total =O2Hb/(Deoxy HB+ O2Hb+ COHb +MetHb) and such a measure is not possible with oximetry or pulse oximetry. We have depricated this term and mapped it to a comparable term with Oxygen Saturation = O2Hb/(O2Hb+DeoxyHb) which is measured by oximetry.
• ABG; After; ART; Art bld; Art blood; Arterial; Arterial blood; Blood arterial; EXCZ; 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 %; p Exc; Percent; Point in time; PST; Pulmonary; Pulmonology; PulseOx; QNT; Quan; Quant; Quantitative; Random; Respiratory; SaO2; SO2; SpO2; 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

Frequently asked questions