What is a haptoglobin (HP) test?
This test steps the volume of haptoglobin in the blood. Haptoglobin is a protein manufactured by your liver. It attaches to a certain type of hemoglobin. Hemoglobin is a protein in your purple blood cells that carries oxygen from your lungs to the rest of your physique. Most hemoglobin is positioned within purple blood cells, but little amounts circulate in the bloodstream. Haptoglobin binds to hemoglobin in the bloodstream. With each other, the two proteins are identified as the haptoglobin-hemoglobin elaborate. This elaborate is swiftly cleared from the bloodstream and taken out from the physique by your liver.
When purple blood cells are damaged, they release extra hemoglobin into the bloodstream. That suggests extra of the haptoglobin-hemoglobin elaborate will be cleared from the physique. The haptoglobin could depart the physique more rapidly than the liver can make it. This triggers your haptoglobin blood amounts to drop. If your haptoglobin amounts are far too lower, it could be a indicator of a problem of the purple blood cells, these types of as anemia.
Other names: hemoglobin-binding protein, HPT, Hp