Test Details
Mnemonic
RETRT
Ordering Code
3400025
CPT-4 Code(s)
86255, plus 86256 if reflexed to titer, at additional cost
Specimen Information
Suggested replacement: TTGG – TISSUE TRANSGLUTAMINASE ANTIBODY, IgG
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells and send 0.5 mL serum in a screw capped plastic vial.
Alternate Specimen
Plasma: ACD, EDTA, heparin (sodium or lithium)
Serum: Red top
Serum: Red top
Minimum Volume
0.1 mL
Transport Temperature
Refrigerated
Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Immunoassay
Reference Range
Negative
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes