Description
FISH (Fluorescence In Situ Hybridization) for chromosomes 13, 18, 21, and XY is a sophisticated cytogenetic technique used to detect specific chromosomal abnormalities. This test employs fluorescent probes that bind to particular regions of these chromosomes, allowing for the visualization and analysis of numerical and structural aberrations. It is widely used in prenatal testing to screen for common aneuploidies like Down syndrome (trisomy 21), Edwards syndrome (trisomy 18), and Patau syndrome (trisomy 13). In cancer diagnostics, this FISH panel can help identify chromosomal changes associated with certain malignancies. The inclusion of sex chromosome analysis (XY) also makes it valuable for detecting sex chromosome disorders. This test provides rapid and accurate results, making it an essential tool in both clinical genetics and cancer research.
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