Does the buccal cheek swab DNA analysis provide the same information as with blood sample or other body parts? A cheek swab collection is easy but is it the best DNA sample?

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Does the buccal cheek swab DNA analysis provide the same information as with blood sample or other body parts? A cheek swab collection is easy but is it the best DNA sample?

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Most DNA testing today is done using samples collected through buccal swabbing, or cheek swabbing. Scientists agree that buccal swab samples are just as reliable as blood samples for DNA testing. DNA is the same in every cell of the body. A cheek cell collected through buccal swabbing contains the same DNA as a blood cell collected through a blood draw. However, buccal swab samples have these primary benefits: Buccal swabbing is easy to do. Buccal swabbing is painless and noninvasive. It can even be safely performed on a newborn infant. Buccal swabs are more reliable than blood samples for individuals who have recently had blood transfusions or bone marrow transplants. Their blood may show the presence of the donors’ DNA.

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