QF-PCR gender testing
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Test details:
The testing serves as a rapid diagnosis of sex chromosomes related to severe genetic conditions and syndromes. It is performed by analysis of polymorphic STR markers, including the PCR technique and capillary electrophoresis. The method uses multiplex QF-PCR to multiply multiple fluorescently labelled DNA fragments of specific STR markers on the chromosomes tested in a single reaction. After amplification, DNA fragments are then separated, detected and analysed using capillary electrophoresis and appropriate software on a genetic analyzer. Fragments of individual STR markers are specified by the length and type of fluorescence labelling. Each fluorescently labelled DNA fragment appears as a peak with a certain height/area that is proportional to the amount of DNA. A standard set of markers is used for the testing of X and Y chromosomes from the proband’s peripheral blood. In the case of insufficient informativeness of the STR markers and to verify the findings in the samples tested, marker supersets (X and Y) are used.