@kevintexas I'm on chemo holiday now for a month and we'll decide at the end of August what to do after CT scan being taken. Hence I will not know my CA19 numbers until the end of the month.

I read few comments in past 2 days on this forum and I've found people commenting that numbers becomes less reliable as you approaching the normal range or your plateau. I think when you move from 6900 to let's say 5500 the movement is clean as the number is dominated by the tumor reduction why when you get close to the floor other things might play a role. This sort of makes sense to me despite I got really worried by the uptick.

Also a comment given by my oncologist: if CA19 tracks well tumor burden is way more reactive than scans. Scans lags behind in both directions.

I'm curious to see your next CA19 number as likely you will be testing before than me. Keep us updated.

Fingers crossed I guess we have no other options than waiting for next tests.