What do all these numbers mean on my DNA Test results?
When you look at a report for DNA Testing there are always a lot of numbers. These numbers throughout the report indicate several things, and it can be overwhelming to figure out which ones are important. As far as understanding your results only two of these numbers will really help you understand the result of your test.
First is the percentage listed as the ‘Probability of Paternity.’ This percentage is generally one of two numbers in a DNA Paternity Test 0% and 99% or higher. This number is probably the most helpful when trying to interpret your DNA Testing results.
In other tests like Siblingship or Avuncular DNA Tests you will not have a percentage in your results. Here the conclusion is based upon an index number which is calculated based on the DNA markers shared by the individuals being tested. This number in this type of testing is anywhere between 0 and basically infinity. When the number is between 0 and 1 it is considered more likely that two people are unrelated. If it is between 1 and 75 the relationship is considered to be favored but still the result is considered inconclusive. If above 75 it is more likely that the individuals are related than not. In this type of testing a result is rarely considered fully conclusive.
In a DNA Paternity Test or a Grandparent DNA test with both grandparents you will also have an index number. This number is generally either 0 or 150 and above. If this number is 0 it is considered an exclusion. If the number is above 150 it means that the alleged father is that many times more likely to be the alleged father than an untested, unrelated, man of the same ethnicity.
Tomorrow I will tell you a little about all the other numbers on your report and how they relate to your results. I know that the reports can be a little difficult to read. I hope that my explanation has shed a little light on the matter, if not tell me and I can break it down a little farther.
Recently i had a dna test done on my daughter, regretfully she was not my child. I have a strong feeling that the child in question is my brothers, how can i tell if this is so by looking at my results. it seems to me if my sibling was the father it would tell me on my results if i knew what i was looking at
What do the percentages gathered from a autosomal test add up? It gave regions of the globe supposedly genetic inheritance is derived. How should these percentages be interpreted?
Hello Evalina,
Thank you for your question. Your question has to with ancestry DNA testing. IDENTIGENE does not offer ancestry testing, however, you may be able to find the information you are looking for with ancestry.com. Here is there website link:
http://www.ancestry.com/
They specialize in ancestry, and are a wonderful company to deal with.
I Have took three dna test with to diferant men that could be my half brother and one girl that could be my half sister. butt i was not explain the one was 0.1229 …10.9% 8 to 2nd was 0.0023 0.2% 435 to 1 the 0.1006 9.1 10 to 1
Hi Donna,
I apologize, I am not sure I understand your question.
Hello Amber
I need your help… Some years ago I took a DNA test with my daughter and her “father.” The DNA test was done through the county whereas once you arrive, no one is permitted to leave. However, the “father” did leave for a while and when he returned he had a red blow pop in his mouth. A few minutes later the test was done. Months went by and I received the results in the mail. The results were in the 70-80% range and my daughter and the alleged “father” shared 11/13 traits. I believe that’s what there’re called. I have stuck to my guns about the guy being her natural father, and asked that the test be retaken, but this was never done. I found out my daughter contacted him through Facebook and we have not had anything to do with this man or his family. Is it at all possible that he is her “father?”
Thank you
Hi Tosha,
It is possible. When there are 2 mismatches, they may be mutations. In situations like that we do not report that, we would try and get more markers tested to confirm the relationship. The fact that he had a blow pop would not make a difference. It would not change his DNA. If anything it would contaminate the DNA which means they would not be able to get a full profile at all and would need to recollect. Because that did not happen tells me the DNA was not contaminated. I would encourage another test.
My daugther had her son and the possible father tested. The DNA test came back with 50% match. The results said he could not be the father. Should the test be redone or is this a common occurance in testing?
I should have included in the previous email that the test covered 20 matches. The child & possible father matched on 10 of these areas.
Hi Kay,
With the IDENTIGENE paternity test results they will show either 99% or higher inclusion, or 0% exclusion. Anything in between is reported as inconclusive. One thing you may notice is there may be some loci matches between the alleged father and child. This can happen without him being the biological father. In order for him to be the biological father the child must match with him at EVERY loci. If there are “some” matches it simply means they are common in the population. You and I could test and have some matches. It does not mean we are related, but simply those specific numbers at those specific loci are common among the population.
My friend recently had a DNA proving he was not the father of the child. There are several markers (7/15 matched). Is there a way by looking at the results if the child is the biological child of my friends brother. (in other words, are they uncle/nephew).
Thanks!!
Hi Jeff,
In order for him to be the biological father of the child he has to match at every location. There may be matches but that could mean they are very common among the population, and not indicate any biological relationship. You and I could test and have matches, it dose not mean we are related, but simply the numbers at those markers are common among the population. If there is a chance that the alleged father’s brother could be the biological father, i recommend that he get tested with the child as well.
ATTENTION: ANTHONY CARTER
MY CASE # WAS T182347/ORIGINATOR: GCS
I USED IDENTIGENE TWO YEARS AGO. KEEP IN MIND, MY FATHER DIDN’T TELL ME UNTIL AFTER MY MOTHER PASSED…THAT HE DIDN’T THINK I WAS HIS CHILD. THAT WAS HARD TO WRAP MY BRAIN AROUND! I AM THE YOUNGEST OF SIX CHILDREN. HOW COULD THAT BE I ASKED MYSELF?
SO WE DID THE IDENTIGENE TESTING. I DO BELIEVE IT IS CORRECT. I JUST WISH I COULD MAYBE GET A BREAK DOWN OF WHAT ALL THE NUMBERS MEAN. CAN YOU HELP? I AM SO HAUNTED BY THIS. I FEEL LIKE HALF A PERSON….
Hello, I recently had a half sibling test done. We match 8 out of 15 markers. But the test says unlikely biologically related. There are a couple of areas I’m confused on, first I don’t see an idex number. And second there are 3 things I don’t understand. First it say f/n 0.0001 prob % 0.0053153979
h/n 0.0443 % 4.2391941236
f/h 0.0012 % 0.1199339310
What do the above numbers mean? Thamk you for any help.
Hello Leah,
I understand that what you are going through must be very difficult. To help you understand your results I recommend contacting our client support team. They are always willing to answer any questions you may have, if you like you also welcome to ask for me, my name is Amber. You can contact our client support team Mon-Fri 9am-8pm EST at (888) 404-4363. Any of us would be happy to review your results in detail to help put your mind at ease.
Hi Steph,
Based on the numbers you supplied it appears the lab tested for half siblings vs. not related, as well as full siblings vs. half siblings. Because I cant see the entire report your best option is to contact the laboratory who completed the testing to confirm what the numbers indicate. I can assume the % indicates the percentage of probability.
For sibling DNA testing we like to get as much information as possible so we know what type of sibling relationship we are looking for. Again, I recommend contacting the laboratory and asking someone to walk you through the report.