LOINC Code 19954-7: Deprecated Fractional oxyhemoglobin in Blood Postductal by Pulse oximetry

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 Bld.postductal.

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
• Method: Pulse oximetry

What it does not mean

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

Key facts

• Deprecated Fractional oxyhemoglobin in Blood Postductal by Pulse oximetry
• Oxyhemoglobin/Hemoglobin.total
• The component for this term Oxyhemoglobin/hemoglobin.total =O2Hb/(Deoxy HB+ O2Hb+ COHb +MetHb) and such a measure requires a co-oximter. It is not possible with oximetry or pulse oximetry. We have depricated this term and likned it o the test that this term was meant to represent with with Oxygen Saturation = O2Hb/(O2Hb+DeoxyHb) as the component and with method = pulse oximetry.
• Bld Postductal; Bld.foot; BldA.foot; Blood; 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; Postductal blood; PULMONARY; Pulmonology; PulseOx; QNT; Quan; Quant; Quantitative; Random; Respiratory; SO2; SpO2; Tot; Totl; WB; Whole blood

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