Researchers may have found an effective way to screen for ovarian cancer by using a blood test, according to a study released Thursday by the American Society of Clinical Oncology.

Ovarian cancer is often called the silent killer because there is no good screening tool, and it's usually detected after it can be cured with surgery.

The trial, involving 3,200 postmenopausal women, was designed to identify women  who are otherwise healthy but unknowingly harboring the earliest signs of ovarian cancer.

(READ More at CNN.com) – Photo by National Cancer Institute, CC license via Wikimedia-Commons