LOINC
Version 2.70

97552-4Fractional oxyhemoglobin in Central venous bloodActive

Part Descriptions

LP15766-6   Oxyhemoglobin
Oxyhemoglobin is the oxygen-loaded form of hemoglobin, the transport molecule for oxygen in the blood. Each hemoglobin molecule is a tetramer with 4 sites that reversibly bind oxygen. Loading occurs in the lung where the pO2 is high, and unloading occurs in tissues according to the hemoglobin saturation curve. The fraction of hemoglobin sites loaded with an oxygen molecule is close to 100% in arterial blood and 60-80% in mixed venous blood. Changes in absorption spectra of hemoglobin upon binding oxygen is the basis for pulse oximetry, and partly account for its bright red color compared to the purple blue of deoxyhemoglobin due to a higher absorption spectrum (940 nm vs. 660 nm wavelength for oxyhemoglobin). Source: Regenstrief LOINC

LP422982-1   BldCV
Central venous blood is blood found in the interior jugular or subclavian vein sampled via a central venous catheter. The composition of central venous blood is different from mixed venous blood, found in the pulmonary artery and also sampled via catheter, and peripheral venous blood, sampled via venipuncture. Central venous blood contains blood from the upper body, whereas mixed venous blood contains deoxygenated blood from the entire body. Source: LOINC

Fully-Specified Name

Component
Oxyhemoglobin/Hemoglobin.total
Property
MFr
Time
Pt
System
BldCV
Scale
Qn
Method

Additional Names

Short Name
OxyHgb MFr BldCV
Display Name
Oxyhemoglobin (BldCV) [Mass fraction]
Consumer Name Alpha
Oxyhemoglobin/Total Hgb, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.70
Last Updated
Version 2.70
Order vs. Observation
Observation

Member of these Panels

LOINC Long Common Name
97535-9 Gas panel - Central venous blood

Example Units

Unit Source
% Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=97552-4