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Mayo Medical Laboratories. Gastrin, Serum. Available online at http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8512. Accessed March 2017.
Devkota BP. (17 January 2014 updated.) Gastrin. Available online at http://emedicine.medscape.com/article/2089092-overview#a4. Accessed March 2017.
Healthwise Staff. (9 September 2014 updated.) Gastrin. Available online at http://www.webmd.com/digestive-disorders/gastrin#1. Accessed March 2017.
Pagana, Kathleen D., Pagana, Timothy J., and Pagana, Theresa N. (© 2015). Mosby's Diagnostic and Laboratory Test Reference. 12th Edition: Mosby, Inc., Saint Louis, MO. Pp 456-457.
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