Can mixing blood samples change a paternity test results?
If someone had a blood sample of a male and mixed it with a blood sample from a child or the childs mother for a paternity test,could the results show that the male is the father even if he is not?
Filed under: Paternity Tests
probably not. The techs. will probably be able to tell that there are two different types of blood in it.
If you are thinking of doing what i think you want to do, i wouldn’t. It is ILLEGAL and you can get charged with a crime.
The thought is not even plausible. No one would be able to mix samples unless the doctor did it by accident, which isn’t likely.
It’d be very obvious from the PCR and controls that such a thing occurred, only the worst technician and worst lab director would make such a freshman mistake.
Not possible. It would be detected that there are two different blood cultures mixed together.
No.. the techs will know that there are two different blood samples mixed together (or DNA samples). I think, if that ever happened, that they would say the samples are tainted and redo the test. They may be able to differentiate between the two samples – that Im not sure of.
To change a blood group – which is what you’re really talking about …. a person must be genetically born to two parents with two different groups ….. it cannot be done in a lab or other test facility …. all that will do is show there are two different bloods in the test sample and the test will be voided……
The only way a DNA test can show if a male is a father is by the testing of a pure blood sample …. this will show the makeup of the blood and determine the percentage of probability ….. which is only 3-4% short of 100% ….. to determine the probability the make up of each blood group has to be understood ……
Your question is a bit like saying can I eat a bowl of cereal if I eat the cornflakes, the milk and the sugar separately?! Of course not! – a bowl of cereal can only be a bowl of cereal if they are all put in the bowl at the same time – otherwise you just have cereal, milk or sugar!……
No, in the lab they will notice two distinct profiles in that particular blood sample. DNA Profiles are individual and when two are combined in a particular sample it is easily noticeable.
If they notice this type of situation they would generally request a new sample for the participant with mixed profile.
Kate Styer
DNA Testing Expert IDENTIGENE