Celiac Disease Diagnosis
Initial screening for
CD is a blood test taken by your physician. The
test can be referred to as a Celiac Panel or by the
names of the individual tests. To provide the most
accurate information, the blood test should include the
following tests: Anit-endomysial antibody (IgA EMA)
and anti-gliadin antibody (IgA & IgG) and tissue
tranglutaminase (tTG IgA).
These tests are very
sensitive and specific for celiac disease. A
gastroenterologist takes small intestine tissue biopsies
if the results of the antibody test(s) are positive or
he/she has a strong suspicion of CD. A biopsy
showing damaged villi in the small intestine is the
first half of the 'Gold Standard' to diagnosing CD.
The second half of the 'Gold Standard' is improvement of
health with the gluten-free diet. It is possible,
in some situations, to have normal blood tests and still
have celiac disease.
Dermatitis Herpetiformis Diagnosis
Your dermatologist will
take a small biopsy of the unaffected skin very close to
an eruption or eruption site. The presence of IgA
deposits confirms a diagnosis of DH. Sometimes the
dermatologist may also want you to have blood work for
celiac disease and see a gastroenterologist.