Chromosomal Microarray, Prenatal, Amniotic Fluid/Chorionic Villus Sampling
Method Description Describes how the test is performed and provides a method-specific reference
DNA extracted from amniotic fluid or chorionic villus sample is labeled and hybridized to the microarray. Following hybridization, the microarray is scanned and the intensity of signals is measured and compared to a reference data set. These data are used to determine copy number changes and regions of excess homozygosity. Chromosomal microarray data alone does not provide information about the structural nature of an imbalance, therefore, some abnormal results may be characterized by FISH and/or a limited 5-cell metaphase chromosome study.(Unpublished Mayo method)
PDF Report Indicates whether the report includes an additional document with charts, images or other enriched information
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
Amniotic Fluid and Chorionic Villi: Discarded 14 days after results are reported.; Products of Conception: Any identifiable fetal tissue (e.g. skin, muscle) is held until the completion of testing. All other tissue is discarded after reporting.
Performing Laboratory Location The location of the laboratory that performs the test