There are a number of reasons that someone might wish to have a DNA sample taken from a deceased loved one. In some cases, they may simply wish to know more about their own heritage. Or they may be interested in learning about possible genetic diseases, particularly if their loved one passed away unexpectedly. 

If you are interested in getting a DNA sample from a loved one who has died, it is possible to do so. Depending on where you lived and how the person died, the process to get the DNA sample may differ, so it is important to research any legal issues surrounding this in your state. 

If a coroner examined the deceased it's likely that they will keep a sample of the deceased’s DNA, typically as a blood spot sample. However, these samples are often destroyed after a certain amount of time has gone, so it’s important to request the sample as soon as possible. 

These days, there are a number of companies that specialize in running DNA samples from someone who is no longer living. The process to get a DNA sample will likely require extra paperwork, and samples must be high quality enough for the DNA to be able to be extracted. It is important to talk to your funeral director to let them know your wishes so they can work with you to find the best way to obtain a DNA sample. 

If your loved one was cremated, there is less of a chance that there will be enough genetic material remaining to get a viable DNA sample. This is because the high temperatures destroy human remains and leave little behind but ashes. However, as science advances there is some chance that it may be possible to obtain DNA results from cremated remains. 

The main thing to know about obtaining DNA samples from someone who has died is that it is possible, but doesn’t always work. You should also know that typically only family members or next-of-kin can request these samples. If you do wish to obtain a sample, time is of the essence, so make sure to bring this up with your funeral director as soon as possible.