A positive genetic test means that the person carries a mutation in the gene for the disease detected by the test, but does not necessarily have the disease.
Genetic testing through the blood, other body fluids, or cells to detect the DNA technology, is to take the test peripheral venous blood or other tissue cells, amplification of its genetic information, through a specific device to detect the DNA molecules in the cells of the test person to detect the DNA molecules, analyze the types of genes and gene defects and its expression of a normal function of the method, so people can understand their own genetic information, clear the cause of disease or predict some kind of body disease. This allows people to understand their own genetic information, identify the cause of disease, or predict the risk of developing certain diseases.
Genetic testing can be used to diagnose disease and to predict disease risk. Disease diagnosis uses genetic testing to detect mutated genes that cause inherited diseases. The most widely used genetic tests are for the detection of hereditary diseases in newborns, the diagnosis of genetic disorders, and the adjunctive diagnosis of certain common diseases.
Expanded information:
Genetic testing is mainly used in the following directions:
1. Identity identification, paternity identification, trace ancestry.
2. Diagnosis of single-gene, chromosomal genetic diseases and band cause screening.
3. Clinical preventive medicine: genetic testing for polygenic genetic diseases.
4. Clinical individualized medicine: pharmacogenomics.
5. Congenital constitution/trait potential analysis.
The technology of genetic testing has become more mature, and the genotypes detected are not only used in diagnosis and treatment, but can even be used to predict the risk of diseases that have not yet occurred based on the content of the database through digital statistics. In the United States, more than 8 million people have undergone genetic testing.
Baidu Encyclopedia - Genetic Testing