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.
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- Nicoll D, et al. Pocket Guide to Diagnostic Tests. 6th ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com/content.aspx?aID=56999060&searchStr=hemoglobin. Accessed Dec. 6, 2013.
- Hemoglobin. Lab Tests Online. http://labtestsonline.org/understanding/analytes/hemoglobin/tab/sample/. Accessed Dec. 6, 2013.
- 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 Dec. 5, 2013.