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T-Cell Receptor Gamma Gene Rearrangement

Item Value
Available Stat? No
Test code TCRG
Performed by Quest
Sendout? yes
Method PCR
Container type Lavender top
Amount to Collect
Blood 5 mL
Marrow 1 mL
Sample type Whole blood, bone marrow
Preferred volume
Whole blood 5 mL
Marrow 1 mL
Min. Volume
Blood 3 mL
Marrow 0.5 mL
Processing notes Do not aliquot or freeze. Store ambient and transport to CB. Order Quest test code 90509.
Normal range
Synonyms TCR Gamma; T-cell clonality
Stability Room temperature 1 week, Refrigerated 1 week.
Turn around times 5 - 7 days
Additional information This assay which interrogates the T-cell receptor gamma locus (TCRG) by a PCR method based on the BIOMED-2 consensus, is useful for establishing clonality of T-cell lymphoid neoplasms and identification of minimal residual disease or early recurrence in patients with a previous diagnosis of a T-cell neoplasm. It can be used in association with the T-cell receptor beta (TCRB) PCR assay (Test code 91446) since false-negative results can occur in up to 5-10% of T-cell malignancies when testing for TCRG PCR only.
CPT coding 81342-90, 84999-90
Last Updated 8/7/2014 9:51:21 AM
Entry Number 1576
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