What you can expect

For a hemoglobin test, a member of your health care team takes a sample of blood by pricking your fingertip or inserting a needle into a vein in your arm. For infants, the sample may be obtained by pricking the heel.

The blood sample is sent to a lab for analysis. You can return to your usual activities immediately after the sample is taken.

March 16, 2017
References
  1. Hemoglobin. Lab Tests Online. http://labtestsonline.org/understanding/analytes/hemoglobin/tab/sample/. Accessed Nov. 27, 2016.
  2. Longo DL, et al., eds. Disorders of hemoglobin. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.com. Accessed Nov. 27, 2016.
  3. CBC with differential, blood. Mayo Medical Laboratories. Rochester, Minn.: Mayo Foundation for Medical Education and Research. http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/9109. Accessed Nov. 27, 2016.
  4. Nicoll D, et al. Pocket Guide to Diagnostic Tests. 6th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com. Accessed Nov. 27, 2016.