Test Catalog

Test ID: XYMF    
Known 45,X, Mosaicism Reflex Analysis, FISH, Whole Blood

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

This test is performed using commercially available probes for the centromere regions of the X (DXZ1) and Y (DYZ3) chromosomes. A total of 500 interphase nuclei (250 each by 2 technologists) are examined to determine the sex chromosome complement.(Wiktor A, Van Dyke DL: FISH analysis helps identify low level mosaicism in Ullrich-Turner syndrome patients. Genet Med 2004;6:132-135)

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


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

Monday through Friday

Report Available The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

7 to 9 days

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

Amniotic Fl. (remaining supernatant/whole fluid aliquots): Discarded 14 days after report. Blood: 4 weeks. Products of Conception (identifiable fetal tissue): Cremated quarterly after results reported. All Other Specimens: Discarded when results reported.

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