Blood Drug Testing

Blood tests for cancer?

My Mum recently had blood tests following scans indicating masses on her lungs. The blood tests do not indicate cancer but I wasn't sure if this means 100% that she does not have lung cancer... or whether it maybe means that it still could be cancer but not progresses enough to be detected in her blood etc... sorry if that's a stupid question but can anyone shed some light? She still has to go for an endoscopy and hopefully we'll know more after that.

Public Comments

1. Some blood tests give an indication of some types of cancer. They are a useful diagnostic tool, and help narrow down the possibilities, but blood test results alone would only be conclusive if the cancer was in the blood, eg leukaemia.