Oxygenated hemoglobin mass fraction in red blood cells (measured in plasma or serum)

What This Test Measures

Oxygenated hemoglobin (oxyHb) is the form of hemoglobin that carries oxygen from your lungs to other parts of your body. This test quantifies the mass fraction of oxyHb in your red blood cells, which can be influenced by factors like oxygen availability, circulation, or underlying health conditions.

Why It Might Be Ordered

Your healthcare provider may order this test if they suspect conditions like chronic lung disease, heart failure, anemia, or other circulatory issues that could affect oxygen delivery. It may also be used in specialized settings, such as monitoring patients with severe respiratory or cardiac problems.

Common Conditions Monitored

While this test isn’t routinely part of standard blood work, it can be useful in diagnosing or managing conditions where oxygen transport is compromised, such as severe anemia, polycythemia (high red blood cell count), or certain types of shock.

Sample Preparation and Testing

This test typically uses a blood sample drawn from a vein. The specimen is processed to separate plasma or serum, where the oxyHb fraction is measured using advanced laboratory techniques, such as high-performance liquid chromatography (HPLC) or similar methods.