Will diet, drugs, alcohol, or medications affect the test results?

No. DNA tests are not affected by food, drugs, alcohol, or medications. There is no need to abstain from eating, drinking or taking medications prior to your appointment, with one exception:  If you are a mother and are breast-feeding a baby who will be tested, please refrain from breast-feeding 30 minutes before the baby’s sample is to be collected.  This is because breast milk contains the mother’s DNA.  If there is residual breast milk in the baby’s mouth when its samples (buccal swabs) are collected, then there is a possibility that the baby’s sample could be contaminated with the mother’s DNA and not produce a clear test result.  If this were to happen, sample recollection would be necessary.

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