How is pernicious anaemia diagnosed?
A blood sample is taken and sent off to the laboratory. An analysis of the red blood cells is usually included with the result of the test. In cases of vitamin B12 deficiency, the red blood cells will be the usual colour but larger than normal. If the blood test shows a low vitamin B12 count, it must be established whether it is pernicious anaemia or if there is some other cause. The Schilling test measures the body’s ability to absorb vitamin B12 from the bowel. This will show whether the anaemia is caused by a lack of intrinsic factor. Blood tests will also confirm if you have any antibodies to intrinsic factor.
