What cancers are detected by blood tests?
I'm curious, what specific types of cancers can be detected through blood tests? Are there any limitations to this method of detection? Are there certain biomarkers or indicators that are commonly looked for in the blood to identify the presence of cancer? Additionally, are there any cancers that cannot be detected through blood tests and require other diagnostic methods? It would be helpful to have a better understanding of the scope and limitations of this type of screening.