What is a Hemoglobin (Hb) Test?
A hemoglobin test determines the hemoglobin levels found in the blood. Hemoglobin is an amino acid found in your red blood cells, which transports oxygen to tissues and organs and helps transport carbon dioxide away from organs and tissues back to your lungs. A hemoglobin test can be used to determine if you have enough hemoglobin in the blood.
To determine the complete picture of red blood cells, a Hemoglobin test is also used in conjunction with other tests like
- A Hematocrit test that can be used to determine the proportion of red blood cells that are present in your blood.
- A total blood count test that measures the amount and kind of blood cells you have.
What is a hemoglobin (Hb) test used for?
It is used for measuring hemoglobin levels in the blood. If hemoglobin is low, you may have anemia indicating that the cells in the body are not receiving enough oxygen. If hemoglobin levels are high, this could indicate certain conditions like Polycythemia vera (which affects your bone marrow, producing excessive red blood cells), dehydration, lung disease, burns, etc.
Understanding the test results of Hemoglobin (Hb) Test
Hemoglobin test results can be read as within range or higher, or lower than the normal range. If the levels are normal, then Hb is functioning well. If the levels are lower, then Hb is low, which means not enough oxygen is available for the cells. If the Hb is high, there is an underlying condition causing excess production of hemoglobin.