What Are Normal Pediatric Hemoglobin Levels?

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.