LOINC Code 19955-4: Fractional oxyhemoglobin in Blood Postductal

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: ACTIVE

What it does not mean

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

Key facts

• Fractional oxyhemoglobin in Blood Postductal
• Oxyhemoglobin/Hemoglobin.total
• To assess presence of patIent ductus arteriosus and potential Right to Left shunt. The electrode is placed on abdomen or lower extremities to monitor postductal blood.
• 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; QNT; Quan; Quant; Quantitative; Random; Respiratory; SO2; 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