Home
HelpTest Code TCGRV T-Cell Receptor Gene Rearrangement, PCR, Varies
Reporting Name
T Cell Receptor Gene Rearrange, VUseful For
Determining whether a T-cell population is polyclonal or monoclonal
Method Name
DNA Extracted for Analysis/Polymerase Chain Reaction (PCR)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
VariesShipping Instructions
Body fluid or spinal fluid specimens must arrive within 4 days (96 hours) of collection.
Specimen Required
Submit only 1 of the following specimens:
Specimen Type: Body fluid
Container/Tube: Sterile container
Specimen Volume: At least 5 mL
Collection Instructions:
1. If the volume is large, pellet cells prior to sending.
2. Send less volume at ambient temperature or as a frozen cell pellet.
Specimen Stability Information:
Body fluid: Ambient/Refrigerated/Frozen
Cell pellet: Frozen
Specimen Type: Paraffin-embedded bone marrow aspirate clot
Container/Tube: Paraffin block
Specimen Stability Information: Ambient
Specimen Type: Frozen tissue
Container/Tube: Plastic container
Specimen Volume: 100 mg
Collection Instructions: Freeze tissue within 1 hour of collection.
Specimen Stability Information: Frozen
Specimen Type: Paraffin-embedded tissue
Container/Tube: Paraffin block
Specimen Stability Information: Ambient
Specimen Type: Tissue Slides
Container/Tube: Unstained tissue slides
Specimen Volume: 10 slides
Specimen Stability: Ambient
Specimen Type: Spinal fluid
Container/Tube: Sterile vial
Specimen Volume: 5-10 mL
Specimen Stability Information: Ambient/Refrigerated
Specimen Type: Extracted DNA from blood or bone marrow
Container/Tube: 1.5- to 2-mL tube with indication of volume and concentration of DNA
Specimen Volume: Entire specimen
Collection Instructions: Label specimen as extracted DNA from blood or bone marrow
Specimen Stability Information: Refrigerated/Ambient
Specimen Minimum Volume
Body fluid or Spinal fluid: 1 mL
Tissue: 50 mg
Extracted DNA from Blood or Bone Marrow:
50 microliters at 20 ng/mcL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Varies | ||
Reject Due To
| Other | Bone marrow core biopsies Paraffin shavings |
Special Instructions
Reference Values
An interpretive report will be provided.
Positive, negative, or indeterminate for a clonal T-cell population
Day(s) and Time(s) Performed
Monday through Friday
Test Classification
This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
81340-TCB (T cell antigen receptor, beta) (eg, leukemia and lymphoma), gene rearrangement analysis to detect abnormal clonal population(s); using amplification methodology (eg, PCR)
81342-TCG@ (T cell receptor, gamma) (eg, leukemia and lymphoma), gene rearrangement analysis, evaluation to detect abnormal clonal population(s)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TCGRV | T Cell Receptor Gene Rearrange, V | In Process |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 19936 | Final Diagnosis: | 22637-3 |
| MP016 | Specimen: | 31208-2 |
Forms
1. Hematopathology Patient Information (T676) in Special Instructions
2. If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request (T726) with the specimen.