What makes the difference in the testing?
All DNA testing is not the same.
The industry standard for paternity testing is 15 DNA markers. This in some cases, such as, the mother is not included in the test, the father has common DNA, there is a mutation of the child’s DNA, the father is from various backgrounds, this will not be enough testing to determine the father of a child accurately. This is usually the only test offered by the less expensive companies. If the customer wishes to have more testing done to get a accurate result, they will have to pay the laboratory to send the samples to a different laboratory, such as us, to do more testing.
Some laboratories in order to keep prices down only are testing 7 DNA markers. In our opinion, only testing 7 markers is highly unethical, as it will produce a much higher percentage of false results. In some cases, these tests will actually be less accurate than blood typing tests of the 1950's.
We have the ability to test 29 PCR, 8 Y chromosome, and 12 RFLP DNA markers. Giving us the ability to offer the most powerful test, with the highest guarantee on the market today. We will keep testing your samples, until we have met the terms of our guarantee, at and affordable price, and free of extra charges.
A test with a 99% or a 99 paternity index is stating that one in one hundred men, of that population would carry similar genes to the tested child.
A test with a 99.9% or a 1000 paternity index is stating that one in one thousand men of the population would carry similar genes to the tested child, in other words the accuracy of this test is 10 times of what a 99% test would be.
A test with a 99.99% or a 10,000 paternity index is stating that one in ten thousand men of the population would carry similar genes to the tested child, in other words the accuracy of this test is 100 times of what a 99% test would be.
A small change in the accuracy makes a big difference.
How it is calculated:
Most population groups, including Singapore, has a DNA population database. This database shows how popular a certain DNA is in that population. When you look at a positive paternity report, you will see a number result for all of the loci. The higher the number means the less common that particular DNA is in that population group. The lower it is, the more common that particular DNA would be. All of these loci calculate into a paternity index.
A paternity index of 99 is 99%. It is calculated by 99 divided by 100 is 99%
A paternity index of 1000 is 99.9%. It is calculated by 1000 divided by 1001 is 99.9%
A paternity index of 10,000 is 99.99% . It is calculated by 10,000 divided by 10,001 is 99.99%
So a company with a guarantee of 99.99% is offering 100 times better testing than one of 99%. While it is not impossible, although highly unlikely that a 99.99% test could come to an incorrect conclusion for the question of paternity, a test of 99% would be 100 times more likely to have an incorrect result. At the 99% level, false inclusions will occur, leading someone to believe they are the father of a child when they are not.