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Test ID TLPMF T-Cell Lymphoma, Specified FISH, Varies


Ordering Guidance


This test is intended for instances when limited T-cell lymphoma fluorescence in situ hybridization (FISH) probes are needed. The FISH probes to be analyzed must be specified on the request, otherwise test processing may be delayed in order to determine intended analysis. If specific probes are not included with this test request, the test may be canceled and automatically reordered by the laboratory as TLPDF / T-Cell Lymphoma, Diagnostic FISH, Varies.

 

If the entire T-cell lymphoma panel is preferred, order TLPDF / T-Cell Lymphoma, Diagnostic FISH, Varies.

 

For patients with T-cell acute lymphoblastic leukemia/lymphoma (T-ALL/LBL), order either TALAF / T-Cell Acute Lymphoblastic Leukemia/Lymphoma (ALL), FISH, Adult, Varies. or TALPF / T-Cell Acute Lymphoblastic Leukemia/Lymphoma (ALL), FISH, Pediatric, Varies depending on the age of the patient.

 

For testing paraffin-embedded tissue samples from patients with T-lymphoblastic lymphoma (T-BLB), see TLBLF / T-Lymphoblastic Leukemia/Lymphoma, FISH, Tissue.



Shipping Instructions


Advise Express Mail or equivalent if not on courier service.



Necessary Information


1. A list of probes requested for analysis is required. Probes available for this test are listed in the Testing Algorithm section.

2. A reason for testing and a flow cytometry and/or a bone marrow pathology report should be sent 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. If this information is not provided, an appropriate indication for testing may be entered by Mayo Clinic Laboratories.



Specimen Required


Submit only 1 of the following specimens:

 

Preferred

Specimen Type: Bone marrow

Container/Tube:

Preferred: Yellow top (ACD)

Acceptable: Green top (heparin) or lavender top (EDTA)

Specimen Volume: 2-3 mL

Collection Instructions:

1. It is preferable to send the first aspirate from the bone marrow collection.

2. Invert several times to mix bone marrow.

 

Acceptable

Specimen Type: Blood

Container/Tube:

Preferred: Yellow top (ACD)

Acceptable: Green top (heparin) or lavender top (EDTA)

Specimen Volume: 6 mL

Collection Instructions: Invert several times to mix blood.


Useful For

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

 

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

 

Evaluating specimens in which standard cytogenetic analysis is unsuccessful

Testing Algorithm

This test includes a charge for application of the first probe set (2 fluorescence in situ hybridization [FISH] probes) and professional interpretation of results. Analysis charges will be incurred based on the number of cells analyzed per probe set.

  

When specified, any of the following probes will be performed:

14q32.1 rearrangement, TCL1A break-apart

14q11.2 rearrangement, TRAD break-apart

i(7q), D7Z1/D7S486

+8, D8Z2/MYC

 

Bone Marrow Staging for Known or Suspected Malignant Lymphoma Algorithm is available, see Special Instructions.

Method Name

Fluorescence In Situ Hybridization (FISH)

Reporting Name

T-cell Lymphoma B/BM, Spec FISH

Specimen Type

Varies

Specimen Minimum Volume

Blood: 2 mL
Bone Marrow: 1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Ambient (preferred)
  Refrigerated 

Reference Values

An interpretive report will be provided.

Day(s) Performed

Monday through Friday

Report Available

7 to 10 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

88271x2, 88275 x1, 88291x1- FISH Probe, Analysis, Interpretation; 1 probe set

88271x2, 88275 x1 - FISH Probe, Analysis; each additional probe set (if appropriate)

LOINC Code Information

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

 

Result ID Test Result Name Result LOINC Value
614348 Result Summary 50397-9
614349 Interpretation 69965-2
614350 Result Table 93356-4
614351 Result 62356-1
GC141 Reason for Referral 42349-1
GC142 Probes Requested 78040-3
GC143 Specimen 31208-2
614352 Source 31208-2
614353 Method 85069-3
614354 Additional Information 48767-8
614355 Disclaimer 62364-5
614356 Released By 18771-6

NY State Approved

Yes