how do they do the dna test
How DNA Testing Is Done. To do a DNA test, a sample of your cells is required. This sample can be from your blood, saliva, skin cells or even the inside of your cheek. Usually, DNA test samples are taken by a doctor or clinic and sent away to a specialized genetic testing lab where the DNA is separated out from your cells. For a blood test, a needle and syringe would be required to draw a sample of blood. For the saliva sample, you would spit into a tube. For the cheek swap, scraping the inside of your cheek with a large cotton swab should do the job.