Tumor marker levels before and after treatment. TM, tumor marker; CEA,... | Download Scientific Diagram
![Limited usefulness of serum carcinoembryonic antigen and carbohydrate antigen 19-9 levels for gastrointestinal and whole-body cancer screening | Scientific Reports Limited usefulness of serum carcinoembryonic antigen and carbohydrate antigen 19-9 levels for gastrointestinal and whole-body cancer screening | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-020-75319-8/MediaObjects/41598_2020_75319_Fig1_HTML.png)
Limited usefulness of serum carcinoembryonic antigen and carbohydrate antigen 19-9 levels for gastrointestinal and whole-body cancer screening | Scientific Reports
![A blood tumor marker combination assay produces high sensitivity and specificity for cancer according to the natural history - Kobayashi - 2018 - Cancer Medicine - Wiley Online Library A blood tumor marker combination assay produces high sensitivity and specificity for cancer according to the natural history - Kobayashi - 2018 - Cancer Medicine - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/9a873d30-ab93-411f-ba8c-d780e23a68b9/cam41275-fig-0001-m.jpg)
A blood tumor marker combination assay produces high sensitivity and specificity for cancer according to the natural history - Kobayashi - 2018 - Cancer Medicine - Wiley Online Library
![Positive CEA Rapid Test Result by Using Rapid Testing Cassette To Detect Intestinal Cancer Stock Photo - Image of blood, carcinoembryonic: 239145006 Positive CEA Rapid Test Result by Using Rapid Testing Cassette To Detect Intestinal Cancer Stock Photo - Image of blood, carcinoembryonic: 239145006](https://thumbs.dreamstime.com/z/positive-cea-rapid-test-result-using-testing-cassette-to-detect-intestinal-cancer-carcinoembryonic-antigen-device-held-hand-239145006.jpg)