Celiac Disease Screen

Source

Blood

Mnemonic

CELIAC or TTG

Specimen Requirements

Collect 2 tubes:
1 x 3 mL light green (mint) top PST tube. Gold top SST tube also acceptable.
and
1 x 3.5 mL gold top SST tube

1 tube/aliquot is for IgA testing in Chemistry

Minimum Whole Blood Volumes for Micro-Collections using Microtainers

Specimen Handling

Additional Information

Test screen for gluten intolerance (Celiac Disease)

Initial test of Celiac Disease Screen includes TTG and IgA. Additional reflexive assays will be ordered as required and may include Anti-Endomysial Antibodies and TTG IgG.

Testing Location

Immunochemistry

Testing Frequency

Weekdays

Alternate Name(s)

TTG IgA, Anti-endomysial antibodies, EMA and TTG IgG

Reference Interval

Anti-Endomysial Antibodies - negative
Tissue Transglutaminase Antibody IgA - < 20 kU/L
Tissue Transglutaminase Antibody IgG - Interpretative ranges:

< 1.0 - negative

1.0 to 2.0 - weak positive

> or = 2.0 - positive

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