Biomarker Lens

Biomarkers · Chemical

Pathologist Interpretation

What it measures

Tests in the graph that measure it
4

A plain-language description with its source has not been added for this biomarker yet. What the laboratories say about the tests that measure it is below.

Tests that measure Pathologist Interpretation

Lymphocyte Clonality Panel PCR

Laboratory
Quest Diagnostics
Test code
91634
Specimen
Blood
Fasting
Not stated as required

What the laboratory says this test is for

This assay interrogates simultaneously the immunoglobulin kappa (IGK), the immunoglobulin heavy chain (IGH), the T-cell receptor beta (TCRB) and the T-cell receptor gamma (TCRG) genes by PCR methods based on the BIOMED-2 consensus. This combination assay will be most useful in diagnosing mixed B-cell and T-cell atypical infiltrates and for lineage identification in poorly differentiated or immature lymphoid malignancies.

Quest Diagnostics test directory, test code 91634

T-cell Receptor TCR Beta Gene Rearrangement PCR

Laboratory
Quest Diagnostics
Test code
91446
Specimen
Blood
Fasting
Not stated as required

What the laboratory says this test is for

This test, which interrogates both the T-cell receptor beta locus (TCRB) 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 T-cell receptor (TCR) gamma PCR assay (Test code 90509), since false-negative results can occur in up to 5-10% of T-cell malignancies with TCRB PCR alone.

Quest Diagnostics test directory, test code 91446

T-cell Clonality Panel TCRB TCRG PCR

Laboratory
Quest Diagnostics
Test code
91445
Specimen
Blood
Fasting
Not stated as required

What the laboratory says this test is for

This test, which interrogates both the T-cell receptor beta (TCRB) locus and the T-cell receptor gamma (TCRG) locus by a PCR method based on the BIOMED-2 consensus, is useful in patients with suspected T-cell malignancies or to evaluate for residual disease after treatment. Several published studies have demonstrated that the combination of TCRB and TCRG PCR using the BIOMED-2 method can detect virtually all clonal T-cell populations.

Quest Diagnostics test directory, test code 91445

T-cell Receptor TCR Gamma Gene Rearrangement PCR

Laboratory
Quest Diagnostics
Test code
90509
Specimen
Blood
Fasting
Not stated as required

What the laboratory says this test is for

This assay which interrogates the T-cell receptor gamma locus (TCRG) by a PCR method based on the BIOMED-2 consensus, is used 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 T-cell receptor beta (TCBR) PCR assay (Test code 91446 or TCRG/TCRB combo test code 91445), since false-negative results can occur in up to 5-10% of T-cell malignancies when testing TCRG PCR only.

Quest Diagnostics test directory, test code 90509

About this page

Everything above is drawn from the named sources and shown as they published it. Reference ranges belong to the laboratory that issued them and the population it named; they are not a universal normal. This page describes the biomarker in general and does not interpret anyone's result. For your own numbers, talk to a clinician, or use Aumnivida, which reads the same graph next to your records.

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