@grammato3 Yes. The signatera jumped from 10 to 30. At that time I had a PET that showed something in my lung. I continued my Libtayo and 2 months later Signatera dropped to 1.7 and new PET showed nothing. My next Libtayo is May 12 and they will do a Signatera test then. I'm just hoping to stay on the 6 week schedule.