Tissue Transglutaminase Antibody, IgG
tTG IgG, WARDE: TTGG, EPIC: LAB6163, SOFT: XTTGG
Specimen Collection Criteria
Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.
Physician Office/Drawsite Specimen Preparation
Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within two hours of collection. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below) .
Preparation for Courier Transport
Transport: 1.0 mL serum, freeze (-20°C/-4°F or below). (Min 0.5 mL)
- Hemolyzed specimens.
- Grossly lipemic specimens.
- Specimens not collected and processed as indicated.
Specimen Stability for Testing:
Room Temperature (20-26°C or 68-78.8°F): 8 hours
Refrigerated (2-8°C or 36-46°F): 48 hours
Frozen (-20°C/-4°F or below): 14 days
Specimen Storage in Department Prior to Disposal:
Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.
Sent to Warde Medical Laboratory, Ann Arbor, MI.
Monday - Friday.
Results available in 2-4 days.
None Detected: Less than 20 EU.
Weakley Positive: 20-30 EU.
Positive: Greater than 30 EU.
Enzyme-Linked Immunosorbent Assay (ELISA).
Gluten-sensitive enteropathy is characterized as a non-allergic hypersensitivity to gluten or storage proteins found in wheat and other cereals. This hypersensitivity causes intestinal villous atrophy resulting in malabsorption. The Tissue Transgutenase IgG (tTG IgG) assay may aid in the diagnosis of gluten-sensitivity enteropathy (i.e., celiac disease, dermatitis herpetiformis) in tTG IgA negative patients with confirmed IgA deficiency. A negative tTG IgG test alone does not rule out gluten-sensitive enteropathy.
WARDE: TTGG, EPIC: LAB6163, SOFT: XTTGG
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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills,
Grosse Pointe, Royal Oak, and Troy campuses.