Mobile Site ›
Print Friendly View

Test ID: FRTAL    
T-Cell Acute Lymphoblastic Leukemia (T-ALL), FISH

‹ Back to Hematology index

Available on the App Store

Method Description Describes how the test is performed and provides a method-specific reference

Identification of deletions ofp16 and TP53 are detected using FISH enumeration strategy probes. Rearrangements of STIL/TAL1, TRB, MLL, and TRAD are detected using dual-color, break-apart (BAP) strategy probes. Dual-color, dual-fusion (D-FISH) strategy probe sets are used to detect t(5;14)(q35;q32), t(9;22)(q34;q11.2), t(10;11)(p13;q14), and in reflex testing when rearrangements of MLL, TRB, or TRAD genes are detected. Amplification of the ABL1 gene on chromosome band 9q34 is detected using a D-FISH probe strategy. For the enumeration and BAP strategy probe sets 200 interphase nuclei are scored and 500 interphase nuclei are scored when D-FISH probes are used. Two technologists analyze each probe set and all results are expressed as percent abnormal nuclei.(Unpublished Mayo method)

Supplemental Report Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.

Specimens are processed Monday through Sunday. Results reported Monday through Friday, 8 a.m.-5 p.m. CST.

Analytic Time Defines the amount of time it takes the laboratory to setup and perform the test. This is defined in number of days. The shortest interval of time expressed is "same day/1 day," which means the results may be available the same day that the sample is received in the testing laboratory. One day means results are available 1 day after the sample is received in the laboratory.

7 days

Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result

10 days

Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

Indefinitely

Performing Laboratory Location The location of the laboratory that performs the test

Rochester