This is a blood test to measure the total amount of the hemoglobin in your blood. The hemoglobin is the portion of the red blood cells which carries oxygen and carbon dioxide. The hemoglobin will be low in different types of anemia. It will also be low in certain disease states including cancer, and in people with nutritional problems or those that have undergone severe bleeding.


No preparation or fasting is necessary.

  • Inform the person doing the test if you are pregnant

  • Tell the person doing the test if you are a smoker

  • Avoid strenuous exercise before having this test


  • Male: 14-18 g/dl or 8.7-11.2 mmol/L (SI units)

  • Female: 12-16 g/dl or 7.4-9.9 mmol/L (SI units)

  • Pregnant female: greater than 11 g/dl

  • Elderly: values are slightly decreased

  • Children:

  • Newborn: 14-24 g/dl

  • 0-2 weeks: 12-20 g/dl

  • 2-6 months: 10-17 g/dl

  • 6 months – 1 year: 9.5-14 g/dl

  • 1-6 years: 9.5-14 g/dl

  • 6-18 years: 10-15.5 g/dl

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.


Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.


It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.