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Hemoglobin A (Hb A)

About Test 

The Hemoglobin A (Hb A) test is a blood test that measures the amount of hemoglobin A, the most common form of hemoglobin, in a person's red blood cells. Hemoglobin is a protein in red blood cells that carries oxygen from the lungs to the body's tissues. The Hb A test is used to diagnose and monitor several conditions, including anemia, which is a shortage of red blood cells or hemoglobin, and sickle cell disease, a genetic condition that causes red blood cells to form a sickle shape and obstruct blood flow.

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