My husband's scans also clear the last 4 times (done every 2 months) but markers climbed from normal range to 140 since Dec 2024. He had an infection at first but the markers did not come back down after. So doctors ordered an MRI this week. While the scans generally are more important than the CA19-9 markers, doctors said better to look for cause of the rise than wait-and-see if it comes back down.