Tissue Transglutaminase Antibody, IgA with Reflex to Endomysial Antibody, IgA Titer EDAB

Method(s) Enzyme Immunoassay/Indirect Fluorescent Antibody
Specimen Required
Collect One 5 mL gold (SST) top tube.
Transport

1 mL serum at 2-8°C.

Stability After separation from cells: Ambient: 8 hours; Refrigerated: 7 days; Frozen: 1 year (avoid freeze/thaw cycles)
Unacceptable Conditions

Plasma. Contaminated, heat-inactivated or severely hemolyzed samples.

Schedule Wed, Fri
Billing Code 2010221
CPTCode 83516 tTG IgA; if reflexed, add 86256 EMA titer
Notes IgA class endomysial antibodies are seen in gluten-sensitive enteropathies. Approximately 70% of patients with dermatitis herpetiformis and almost 100% of patients with active celiac disease will demonstrate IgA antibodies. These antibodies generally decrease or become negative in patients on gluten-free diets and will usually reappear upon gluten challenge. All positives are titered to endpoint. If tTG IgA is 20 units or greater, then EMA titer will be added.
Preferred Specimen Collection Device(s)
Reference Interval
ComponentReference Interval
Tissue Transglutaminase Antibody, IgANegative: less than 20 Units
Weak Positive: 20-30 Units
Moderate to Strong Positive: greater than 30 Units
Endomysial Antibody, IgA TiterLess than 1:10
No Appointment Necessary
Show All Locations >
12 Patient Service Centers in Central New York.

Test Directory

A B C D E F
G H I J K L
M N O P Q R
S T U V W X
Y Z # List >