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Then to collect a DNA sample just rub the swab inside your cheek for about 15 to 20 seconds. Finally put the paperwork and samples into the postage-paid envelope. And then drop it in any mailbox.

One of the DNA markers checked by the lab during paternity testing is the “Amelogenin,” or sex gene. On a report, this shows as XX for female, and XY for male. This is a useful process for a variety of reasons.

For standard paternity DNA testing, once ALL the samples have been received at the laboratory, the results are typically available in 3 to 5 working days*. Paternity For Life aims to have your results back to you as soon as possible.

False Positives The party seeking to establish paternity can also manipulate a test into giving a false positive. They can submit a sample from one of the alleged father's known relatives, such as the man's biological children or a niece, nephew, or grandchild.

Defective Test Kits or Components The components of the DNA test could be defective. A defect in any component of the DNA test could result in a false-positive or a false-negative result.

AlphaBiolabs DNA Paternity Test AlphaBiolabs promises 100% accuracy in its paternity DNA test results, obtained in ISO-accredited DNA laboratories, which aims to meet “the very highest international quality standards,” according to the accrediting agency.

While blood samples can also be used, blood draws are more intrusive and less convenient. Also, because a person's DNA is the same in cells that line the cheeks and in blood cells, a cheek swab is just as accurate as a blood test.

If the tested man is the biological father of the child then he is expected to match all or all but one (or in very cases all but two) of the child's paternal markers. If three or more tests are observed where there is no matching DNA marker between the tested man and child then this result excludes him from paternity.

Paternity testing based on DNA has become the most accepted method for proof of biological relationship. Since half a person's DNA is inherited from the mother and the other half from the father, comparison of DNA sequences can identify parentage.

Even though paternity tests can be wrong in a small number of cases, DNA testing is considered highly reliable. If you suspect that the paternity test was tampered with or is incorrect, request a second test. You may be required to pay for the second test.

Bad testing protocols can give false positives in as many as 1.1% of tests, far higher than the 0.001% error rate touted by labs. The party seeking to establish paternity can also manipulate a test into giving a false positive.