Home DNA Testing: How Does it Work?

Posted: October 9, 2011 in Uncategorized

DNA is considered as the universal code in your body that will dictate how it works. It is made up of a helix structure made up of a series of pair molecules. It is unique and specific to every individual and cannot be altered unless in extreme mutation cases caused by radiation exposure. During procreation, the genes of the mother and father equally contribute to form a new DNA sequence of molecule pairs. DNA testing examines these pairs for consistencies and abnormalities.

Generally, both parents are sampled and then compared to the child’s DNA. The mother is initially sampled and compared which pairs of the child are hers. With the use of these results, the remaining pairs may allow for the father’s results to be included or excluded as the contributor. If the mother isn’t present, the DNA test tends to be harder and further testing is required.

Home DNA Testing

The home DNA test is usually done through the cheek swab or buccal method. The cheek is loaded with DNA. The test involves the use of a sterile and soft swab that is used to stroke the area inside your cheek and conveniently collect your very own DNA samples. After the collection, the swabs are dried and then placed in a sealed envelope clearly labeled for testing. This is then sent to the laboratory for analysis and processing.

There are companies who offer kits that test DNA based on saliva swab. If you choose this specimen collection process, make sure you don’t drink for several hours before taking the swab. Read manufacturer’s instructions regarding the procedure. Use the included Q tip in the package to swab the inside of your mouth.

The DNA Evaluation Process

The lab performs a set of series test on the specimen to know whether the DNA samples match. Most laboratories perform various tests to find matches between the DNA and for ‘markers’ that will show if two DNA strands originate from the same lineage. For accurate and timely results, most labs ask for both the parent’s samples. The test can also determine where your ancestors come from.

The accuracy of the results will depend upon the user who takes the samples. If home DNA testing isn’t done properly, results will show that. Make sure you follow the step by step instructions outlined in the kit. Most kits guarantee 99% position and 100% exclusion results.


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