|Why is this test done?||This test is done to help diagnose certain types of anemia (pernicious anemia). It can also detect a problem with vitamin B12 (cyanocobalamin) absorption in the intestine.|
|How to prepare:||
|Associated Tests:||Other tests can be performed at the same time, such as a complete blood count , blood vitamin B12, folate , anti-intrinsic factor antibodies and intrinsic factor.|
Vitamin B12 is an important vitamin for the body. It plays several roles, especially with hemoglobin and red blood cell production. This vitamin is found in certain foods such as offals, seafood, fish, eggs, dairy products and enriched cereals. For the body to be able to absorb this vitamin a factor must however be present in the intestine. This factor is called intrinsic factor and is produced in the stomach. Certain people do not produce this factor and consequently suffer from vitamin B12 deficiency.
To perform this test, a certain amount of vitamin B12 is injected in the patient. The patient also takes lightly radioactive vitamin B12 by the mouth. Urine produced over the next 24 hours is then collected and analyzed to detect the presence of vitamin B12, making it possible to know if the patient is able to absorb vitamin B12 or not.
What you need to know before the test
Before going for blood tests, a procedure or other exam, it is best to always bring a list of all the drugs you take (prescription, OTC and natural health products). Unless told otherwise, you should take your medication as usual on the day of the test. When in doubt, ask your pharmacist for more information.
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The patient information leaflets are provided by Vigilance Santé Inc. This content is for information purposes only and does not in any manner whatsoever replace the opinion or advice of your health care professional. Always consult a health care professional before making a decision about your medication or treatment.