Biomarkers can be used in various ways to detect cancer:
- Screening Tests: Biomarkers can be used in screening tests to detect cancer in asymptomatic individuals. For example, the PSA test is used to screen for prostate cancer.
- Diagnostic Tests: When a patient presents symptoms, biomarkers can help in diagnosing the specific type of cancer. For instance, elevated levels of CA-125 can indicate ovarian cancer.
