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A member asked:
What are the tests and methods for determining a prader willi diagnosis?
A doctor has provided 1 answer
Genetic: Most common is a microdeletion in the p-w area of the chromosome 15 from dad. Sometimes both chromosome 15's come from mother or both genes act as if they came from mom because the gene from dad was changed. Tests: fish test of chromosome 15 in the p-w region or genetic microarray. Methylation is used to show that both genes act as if they came from mom even though one came from dad
Answered 10/26/2015
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