What is hemoglobin?
Hemoglobin is the part of red blood cells that carries oxygen to all parts of the body. The usualtype of hemoglobin is called hemoglobin A. Genes that we inherit from each of our parents determine what type of hemoglobin we have.
What is hemoglobin D?
Hemoglobin D means the hemoglobin protein is slightly different from the common Hemoglobin A, and will show up separately on testing. It was originally described from Punjab and from Los Angeles, and although it is different it behaves like normal hemoglobin A. Hemoglobin D does not cause anemia and is not a disease
What is hemoglobin D trait?
Hemoglobin D trait means one gene for the usual hemoglobin (A) is inherited from one parent and one gene for hemoglobin D from the other parent, and there are no symptoms. When someone inherits the gene for hemoglobin D from both parents, the person has homozygous (same genes) hemoglobin D. People with homozygous hemoglobin D also have no health problems, but it may cause mild anemia in the first few months of life.