Guardant won’t completely eliminate tissue biopsy because liquid biopsy is not 100% accurate.
Yet… not yet. Given all that we are learning, those days may well be here in 10-15 years or so. It’s an arduous process to build the database of what shows up in the blood for which cancer/tumor. It will take time but I would not be surprised at all if we don’t do a biopsy on the majority of cancers in a few years.
I can even see a point in several years when you turn 40 or 50 you get a blood test to look for the common cancers with a blood test and then you get it every year thereafter. Kinda like a mammogram for women. Men get tested for colon, lung, prostate, liver, pancreatic, bladder, renal. Swap out prostate for breast in women and you get most of them. We do live in amazing medical times for sure.
MC