According to the U.S. National Library of Medicine, newborns should have a hemoglobin level ranging between 14 and 24 grams per deciliter. The normal range for infants is between 9.5 and 13 grams per deciliter.
The U.S. National Library of Medicine describes hemoglobin as a protein found in red blood cells that carries oxygen. It is tested by withdrawing blood from a patient and sending the sample to a laboratory. Tests are commonly ordered and are included as part of a complete blood count. Those who are fatigued, have chronic medical problems, are in treatment for cancer or are pregnant often receive a hemoglobin test.