What the results mean

Test results must be interpreted carefully because several factors can influence test outcomes, such as variations in your body or even what you eat.

In addition, keep in mind that noncancerous conditions can sometimes cause abnormal test results. And, in other cases, cancer may be present even though the blood test results are normal.

Your doctor reviews your test results to determine whether your levels fall within a normal range. Or your doctor may compare your results with those from past tests.