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A normal result for chromosome analysis is 46, XX or 46, XY. This means there are 46 chromosomes (including two X chromosomes for a female or one X and one Y for a male) with no structural abnormalities. A normal result for a direct DNA mutation analysis or linkage study is no gene mutation found.
There can be some benefits from genetic testing when the individual tested is not found to carry a genetic mutation. Those who learn with certainty they are no longer at risk for a genetic disease may choose not to undergo preventive therapies and may feel less anxious and relieved.
Source: The Gale Group. Gale Encyclopedia of Medicine, 3rd ed.";

by 3 hours ago
