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Test Mnemonic TLPF T-Cell Lymphoma, FISH, Blood or Bone Marrow

Useful For

Detecting a neoplastic clone associated with the common chromosome abnormalities seen in patients with various T-cell lymphomas 

 

Tracking known chromosome abnormalities and response to therapy in patients with T-cell lymphoma

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
_I099 Interphases, 25-99 No, (Bill Only) No
_I300 Interphases, ≥100 No, (Bill Only) No
_IL25 Interphases, <25 No, (Bill Only) No
_PADD Probe, +1 No, (Bill Only) No
_PB02 Probe, +2 No, (Bill Only) No
_PB03 Probe, +3 No, (Bill Only) No
_PBCT Probe, +2 No, (Bill Only) No

Testing Algorithm

This test includes a charge for application of the first probe set (2 FISH probes) and professional interpretation of results.

 

Additional charges will be incurred for all reflex probes performed. Analysis charges will be incurred based on the number of cells analyzed per probe set. If no cells are available for analysis, no analysis charges will be incurred.

 

See Malignant Lymphoma, Guideline for Bone Marrow Staging Studies in Special Instructions.

 

Depending on the lymphoma subtype suspected, the most appropriate probes to order are listed in Clinical Information.

 

If the patient is being tracked for known abnormalities, indicate which probes should be used.

 

Panel includes testing for the following abnormalities using the probes listed:

14q32.1 rearrangement, TCL1A

-7/7q-/i(7q), D7S486/D7Z1

+8, D8Z2/MYC

 

This assay detects chromosome abnormalities observed in the blood and bone marrow of patients with T-cell lymphoma. For testing paraffin-embedded tissue samples from patients with T-cell lymphoma, order TLYMF / T-Cell Lymphoma, FISH, Tissue.

Method Name

Fluorescence In Situ Hybridization (FISH)

Reporting Name

T-cell Lymphoma, FISH, B/BM

Specimen Type

Varies


Specimen Required


Provide a reason for referral with each specimen. The laboratory will not reject testing if this information is not provided, but appropriate testing and interpretation may be compromised or delayed.

 

Forms: If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request Form (T726) with the specimen

(http://www.mayomedicallaboratories.com/it-mmfiles/hematopathology-request-form.pdf)

 

Advise Express Mail or equivalent if not on courier service.

 

Submit only 1 of the following specimens:

 

Specimen Type: Blood

Container/Tube: Green top (sodium heparin)

Specimen Volume: 7-10 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Other anticoagulants are not recommended and are harmful to the viability of the cells.

 

Specimen Type: Bone marrow

Container/Tube: Green top (sodium heparin)

Specimen Volume: 1-2 mL

Collection Instructions:

1. Invert several times to mix bone marrow.

2. Other anticoagulants are not recommended and are harmful to the viability of the cells.


Specimen Minimum Volume

Blood: 2 mL/Bone Marrow: 1 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient (preferred)
  Refrigerated 

Reference Values

An interpretive report will be provided.

Day(s) and Time(s) Performed

Samples processed Monday through Sunday. Results reported Monday through Friday, 8 a.m.-5 p.m. CT.

Performing Laboratory

Mayo Medical Laboratories in Rochester

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

88271x2, 88291 – DNA probe, each (first probe set), Interpretation and report

88271x2 – DNA probe, each; each additional probe set (if appropriate)

88271x1 – DNA probe, each; coverage for sets containing 3 probes (if appropriate)

88271x2 – DNA probe, each; coverage for sets containing 4 probes (if appropriate)

88271x3 – DNA probe, each; coverage for sets containing 5 probes (if appropriate)

88274 w/modifier 52 – Interphase in situ hybridization, <25 cells, each probe set (if appropriate)

88274 – Interphase in situ hybridization, 25 to 99 cells, each probe set (if appropriate)     

88275 – Interphase in situ hybridization, 100 to 300 cells, each probe set (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
TLPF T-cell Lymphoma, FISH, B/BM In Process

 

Result ID Test Result Name Result LOINC Value
52009 Result Summary 50397-9
52011 Interpretation In Process
52010 Result Table No LOINC Needed
54566 Result In Process
CG719 Reason for Referral 42349-1
CG720 Specimen 31208-2
52012 Source 31208-2
52013 Method 49549-9
55118 Additional Information 48767-8
53849 Disclaimer 62364-5
52014 Released By No LOINC Needed