Lung Cancer, ALK (2p23) Rearrangement, FISH, Tissue
Method Description Describes how the test is performed and provides a method-specific reference
The test uses an FDA-approved ALK dual-color, break-apart rearrangement probe kitset. The ALK probe consists of 2 probes that flank the ALK gene region at 2p23 (Abbott Molecular). Five micron sections of formalin-fixed, paraffin-embedded tissue specimens are cut and mounted on positively-charged glass slides. The selection of tissue and the identification of target areas on the hematoxylin and eosin-stained slide are performed by a pathologist. The probe set is hybridized to the appropriate target areas and 2 technologists analyze 25 interphase nuclei each (50 total). Results are reported based on the guidelines include with the probe kit and package insert with the results expressed as the percent abnormal nuclei. (Unpublished Mayo method)
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.
Samples 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.
Maximum Laboratory Time Defines the maximum time from specimen receipt at Mayo Medical Laboratories until the release of the test result
Specimen Retention Time Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded
Performing Laboratory Location The location of the laboratory that performs the test