I decided to get tested to see if I could donate my kidney to my wife of 6 years. We have two kids together (4f, 2m). My wife got sick just after our son was born and now is in need of a kidney transplant. We checked with her relatives and none were a match or a viable doner.
Last week I got tested. I knew it would be a long shot so I decided to get tested to see if I could donate. I got a call the other day saying that I was a match. The doctor then said something about wanting to do additional testing due to some information from the HLA tissue test results. I didn't think much of it and agreed.
Then the results came in I was shocked and confused. He explained that because of how DNA information is passed down through generations a parent to a child could have at least a 50% match. Siblings could have a 0-100% match. It was rare to have a high match as husband and wife. I asked what does that mean.