Exclusion Test

Good morning Doctor, my partner and I are trying to have a child. Unfortunately my partner's dad died at the age of 68 from an infection. He had been suffering from Huntington’s Chorea for a few years. Fairly enough, my partner doesn't want to undergo the test. I wanted to ask you if you could do the exclusion test on the fetus, despite the fact that my partner's sick father died, but we have all the papers of his visits and the DNA when he did it in the center in Milan and I wanted to ask if you could perform this test anyway. Thank you very much