How to Measure Hemoglobin

Hemoglobin contains iron that is responsible for the red color in human blood. It helps red blood cells keep their shape, and supports the transfer of oxygen and carbon dioxide in the blood. Hemoglobin carries oxygen to the lungs and other parts of the body, and it returns carbon dioxide to the lungs.



Healthcare professionals usually measure hemoglobin as part of a complete blood count, but it is measured more often for individuals diagnosed with anemia or other health conditions. Measuring hemoglobin is not difficult under the direction and supervision of a healthcare provider.

Instructions

• 1

  Obtain a doctor's authorization for a hemoglobin test. This will be conducted at a medical laboratory or physician's office. Do not fast prior to a hemoglobin test, unless otherwise directed. A nurse or laboratory technologist will take a sample of blood by sticking your finger, or inserting a needle into a vein inside your arm.

• 2

  Analyze the blood sample. Your blood will be sent to a laboratory for analysis, where the hemoglobin levels will be measured. The technician will expose your sample to a chemical that will bind to the hemoglobin, allowing them to view it under a microscope. Allow 2-3 days for laboratory results to be returned, in most cases.

• 3

  Obtain hemoglobin test results as soon as they are available. The doctor will compare your results with normal levels, which are usually 13.8 to 17.2 gm/dL for men, and 12.1 to 15.1 gm/dL for women. If your results are abnormal, discuss a treatment plan with your doctor.

• 4

  Repeat hemoglobin testing according to your doctor's recommendations. Follow the doctor's prescribed treatment, and take any medications according to directions.

• 5

  Consult a doctor or other qualified healthcare provider before starting any new treatment plans or adjusting medications. Discuss the reliability and concerns of home hemoglobin testing kits before considering their use.