Complete blood count (CBC). This test gives important
information about the kinds and numbers of cells in the blood. Having a low red
blood cell count is a sign of
anemia. Vitamin B12 deficiency anemia causes the red
blood cells to be larger than normal, so it is called a macrocytic (meaning big
cells) or megaloblastic (big, immature-looking cells) anemia. Problems other
than vitamin B12 deficiency anemia also can cause macrocytic anemia.
Folic acid test.
Folic acid is another type of B vitamin. Some people
who have vitamin B12 deficiency anemia also have folic acid deficiency anemia,
and both of these deficiencies cause similar symptoms.
Homocysteine test and methylmalonic acid (MMA) test.
The amount of these substances in the blood rises as the level of vitamin B12
decreases. Your doctor may use these tests to check to see why vitamin B12
levels may be borderline low.
Having pernicious anemia may increase a person's
risk of developing stomach cancer. If you have pernicious anemia, you may need
to ask your doctor whether you should be screened for stomachcancer on a
It is possible that the main title of the report Leukocyte Adhesion Deficiency Syndromes is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.