Antiparietal cells antibodies test
An antiparietal cells antibodies test is a blood test that looks for antibodies against the parietal cells of the stomach. The parietal cells make and release a substance that the body needs to absorb vitamin B12.
APCA; Anti-gastric parietal cell antibodies
How the test is performed
A blood sample is needed. For information on how this is done, see: Venipuncture
How to prepare for the test
No special preparation is necessary.
How the test will feel
Why the test is performed
Your health care provider may use this test to help diagnose pernicious anemia . Other tests are also used to help with the diagnosis.
A negative result is normal.
What abnormal results mean
A positive test result is abnormal. This may be due to:
What the risks are
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
- Excessive bleeding
- Fainting or feeling light-headed
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
Antony AC. Megaloblastic anemias. In: Goldman L, Ausiello D, eds. . 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 170.