Medical Procedure
Genetic testing is often done as part of a genetic consultation and as of mid-2008 there were more than 1,200 clinically applicable genetic tests available. Once a person decides to proceed with genetic testing, a medical geneticist, genetic counselor, primary care doctor, or specialist can order the test after obtaining informed consent.
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 medical 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. Alternatively, a small amount of saline mouthwash may be swished in the mouth to collect the cells. The sample is sent to a laboratory where technicians look for specific changes in chromosomes, DNA, or proteins, depending on the suspected disorder. The laboratory reports the test results in writing to a person's doctor or genetic counselor.
Routine newborn screening tests are done on a small blood sample obtained by pricking the baby's heel with a lancet.
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Famous quotes related to medical procedure:
“There may perhaps be a new generation of doctors horrified by lacerations, infections, women who have douched with kitchen cleanser. What an irony it would be if fanatics continued to kill and yet it was the apathy and silence of the medical profession that most wounded the ability to provide what is, after all, a medical procedure.”
—Anna Quindlen (b. 1952)