There is now a blood test that will accurately detect early cancer of all types. It has an accuracy of greater than 95%. If the test is repeated, the accuracy is greater than 99%. That is to say, that false positive and false negative rates are less than 1%. The test is called AMAS
Info from http://www.lightparty.com/Health/DETECT.html
If your white cells and plattlets are non existant. You have a serious problem.
The problem with the blood tests for cancer are that if the cancer is already in your blood that means it has probably spread through your body, and then it might be too late.
Nothing is that absolute.
I am not sure about these tests.
If you have cancer then you will most probably have anemia
A doctor recently told my father that BLOOD TESTS are not 100% accurate.
You still need a doctor to examine you with a blood test.
I know it is out there I don't know the name of it but its pretty pricey I think it checks for genes or cells I'm not sure