What Diseases Can Be Detected Through Genetic Testing?

If you have symptoms of a disease that may be caused by genetic changes, sometimes called mutated genes, genetic testing can reveal if you have the suspected disorder.

For example, genetic testing may be used to confirm a diagnosis of cystic fibrosis or Huntington’s disease.

Presymptomatic and predictive testing.

What does genetic test show?

Genetic testing is a type of medical test that identifies changes in chromosomes, genes, or proteins. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person’s chance of developing or passing on a genetic disorder.

How many genetic diseases can be identified using DNA testing?

The Food and Drug Administration approved the first home DNA tests Thursday that let people find out if they have a genetic risk for certain diseases. The FDA decision allows home DNA test company 23andMe to directly market its gene tests for 10 diseases, including Parkinson’s, Alzheimer’s and some rare blood diseases.

How reliable is genetic testing in predicting diseases?

While a 2016 poll showed only 6 percent of American adults have undergone genetic testing, 56 percent of them said they would want to if it could predict cancer or a disease like Alzheimer’s. Most Americans, the poll found, believe genetic tests for predicting disease are mostly accurate and reliable.

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