Thank you for responding. The DNA test I took was from the Guardant company, called Reveal. It’s called ctDNA which stands for circulating tumor DNA. Waiting for results of second blood test. There’s another company called Signatera that does DNA blood testing and maybe more that I don’t know of. There is no protocol for clinical practice with these tests. Not sure of false positive or false negative results. If you don’t have to get it, don’t!