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Re: chromosome studiesFrom: ATB28@aol.comSat Dec 7 11:18:50 1996
In a message dated 96-12-07 10:38:03 EST, rossmann@MEM.po.com writes: << I have done amniocentesis on dec.18, 96 and yesterday laboratory physician told me it may still take one week to get the result. >> Somewhat tongue in cheek I must ask whether or not your ability to obtain a future answer is equivalent to your ability to obtain an amnio in the future? If so, time would be an irrelevant concern. (;-) 7-10 days is most common for a full karyotype; 24-48 hours for FISH (realize, however, that FISH results have most applicability when a constellation of abnormalities is seen on U/S examination which suggest a specific trisomy and the FISH result is used to *confirm* a suspected U/S diagnosis). There have been plenty of instances where patients have been told results were normal by FISH, and later the diagnosis was amended because of rearrangements, uncommon aneuploidies, etc were detected by full karyotype. I suspect the situation will improve with CGH and whole chromosome painting technology does. AT Bombard
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