Total protein and total protein/globulin (A/G) ratio. Lab Tests Online. https://labtestsonline.org/understanding/analytes/tp/tab/test/. Updated December 19, 2018. Accessed January 2019.
Total protein test. NHS. https://www.nhs.uk/conditions/total-protein-test/. Updated September 21, 2018. Accessed January 2019.