New Blood Test for Colorectal Cancer Screening

SOURCE npr.org
A new blood test developed by Guardant Health could become another screening option for colorectal cancer if approved by the FDA. The test detects 83% of people with colorectal cancer and could help improve early detection. However, it will not replace colonoscopies as the next step if the test is positive.

Key Points

  • Guardant Health developed a blood test for colorectal cancer screening
  • Test detects circulating tumor DNA in the bloodstream
  • Could reach more people for screening
  • Colonoscopy still necessary if blood test is positive

Pros

  • Blood test could detect 83% of people with colorectal cancer
  • Less invasive than colonoscopy
  • Could improve early detection of colorectal cancer

Cons

  • Will not replace colonoscopies for further evaluation
  • May not be as effective in detecting precancerous lesions compared to colonoscopy