SST tube
1.5 mL serum
1.0 mL serum
Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate for 7 days or freeze for longer storage.
Collect specimen in an SST tube.
Monday - Friday (initial IgA test); refer to individual test entries for reflexive testing.
8 hours (initial IgA test); refer to individual test entries for reflexive testing.
Serum IgA (turbidimetric); Transglutaminase IgA/IgG Antibody (Multiplex Flow Immunoassay); Deamidated Gliadin IgA/IgG Antibody (Multiplex Flow Immunoassay); Endomysial IgA (ELISA)
Refer to individual test entries.
The Celiac Disease Algorithm is utilized to streamline the serological testing for the diagnosis of celiac disease. The algorithm initially orders a serum IgA. Depending on the IgA result, further testing is reflexively ordered and processed. If the serum IgA is very low (<6 mg/dL), transglutaminase IgG AB (TTGG) and deamidated gliadin IgG AB (GLADG) are automatically performed. If the serum IgA low (>6, but below age matched reference range), transglutaminase IgG and IgA antibody tests (TTGG, TTGA), and deamidated gliadin IgG and IgA antibody tests (GLADG, GLADA) are reflexively performed. If the initial serum IgA result is normal or elevated, transglutaminase IgA AB (TTGA) is performed. If the transglutaminase IgA AB is negative (<15) or positive (>30), no further testing is performed. Testing is complete. If the transglutaminase IgA AB is weakly positive (15-30), endomysial IgA AB (EMA) and deamidated gliadin IgA AB (GLADA) testing are reflexively performed.
By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated.
82784
21986
GLADA 83516 GLADG 83516 TTGA 83516 TTGG 83516 EMA 86255
GLADA 35601 GLADG 35602 TTGA 35603 TTGG 35604 EMA 21947
Red top tube