How is genetic testing done?
Genetic tests are performed on a sample of blood, hair, skin, amniotic fluid (the fluid that surrounds a fetus during pregnancy), or other tissue.
For example, a procedure called a buccal smear uses a small brush or cotton swab to collect a sample of cells from the inside surface of the cheek..
How long does genetic testing take NHS?
Genetic testing is complicated and is often slow. It may take two to six months for a test result in some cases. In other cases it can take a lot longer. Your doctor or counsellor will tell you in clinic how long your test will take.
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.
Why does genetic blood testing take so long?
Why do some genetic tests take so long whilst others can be done quickly? If the laboratory knows exactly what mutation it is looking for, because somebody else in the family has the same condition, or because the laboratory knows which area of the gene to look at, it has a much easier task.
What are the disadvantages of genetic testing?
Some disadvantages, or risks, that come from genetic testing can include:Testing may increase your stress and anxiety.Results in some cases may return inconclusive or uncertain.Negative impact on family and personal relationships.You might not be eligible if you do not fit certain criteria required for testing.
What are the pros and cons of genetic testing?
Pros of Genetic TestingTreatment of Disease. … Lifestyle Changes for Disease Prevention. … Stress Release from Lack of Genetic Variants. … A Negative Test Could Mask Additional Causes. … A Positive Test Could Unnecessarily Increase Stress. … Genetic Purgatory. … Cost. … Privacy Concerns.More items…•