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What were your tumor marker results at time of stage 4 diagnosis?

Pancreatic Cancer | Last Active: Jun 29, 2023 | Replies (17)
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@patel

Where do you get ctDNA or liquid biopsy or signature testing. Does Mayo offer them. If so to whom in the pan can population. Any info to understand this testing is much appreciated as I am dealing with tumor size shrinkage in primary tumor in pancreas but elevation inn ca-9 19...response in one area to current treatment but progression in other organs including peritoneal cavity. ...I am not sure which way to go...help. currently my oncologist is pressuring testing with pet scan . .help with guidance...education. information .thanks

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Replies to "Where do you get ctDNA or liquid biopsy or signature testing. Does Mayo offer them. If..."
patel | @patel | Jun 22, 2023

Some types or autocorrect...signatura testing not signature. And yboncologist is persuing pet scan not pressuring

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gamaryanne | @gamaryanne | Jun 22, 2023

Your oncologist can order the Signatera test for you. It is custom designed for you, using your biopsy tissue which should have been stored.
This test looks for residual disease in your bloodstream. I call them “roamers” looking for a place to set up camp! This test is often used in conjunction with the CA19-9 to illustrate a trend indicating if therapy is working or not. The PET can show where trouble may be brewing; CTs and MRIs are usually definitive.
Signatera info is very available online for further detail.

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