Multi-Cancer Early Detection (MCED) Tests

Multi-cancer early detection (MCED) tests can screen for up to 50 cancers with a single tube of blood. They are not approved by the FDA yet, and most are not covered by insurance, but they are an important and evolving area of cancer research.

You may want to request an MCED test if you are age 50 or older as your risk of cancer increases with age, or if you are under age 50 and are at increased risk for cancer due to your family history, personal cancer history, lifestyle factors, or certain health conditions.

Understanding Multi-Cancer Early Detection (MCED) Tests

A multi-cancer early detection (MCED) test screens for up to 50 types of cancer, including some that do not currently have routine screening tests.

The blood test looks for signs of cancer in the body, often before any symptoms appear. It works by analyzing small pieces of genetic material and other markers that circulate in the blood. These can come from normal cells as well as cancer cells. In some cases, cancer cells release patterns that look different from healthy cells, which the test may be able to detect.

MCEDS Don't Diagnose Cancer, Don't Replace Regular Screenings

This test does not diagnose cancer, and is not meant to replace routine screenings; it is to be used with them. If a cancer signal is found, it does not mean you have cancer, but it can help your care team decide whether additional testing is needed. Early detection may lead to earlier care, when treatment can be most effective.

MCED Test Accuracy

MCED tests are highly sensitive, but they can produce false positive results. This means a cancer signal may be detected even when cancer is not present, which is why follow-up testing is important.

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MCED Test Benefits

The benefits of MCEDs include:

They help find cancer earlier. Many cancers aren’t discovered until symptoms appear. MCED testing can detect cancer signals earlier, when treatment may be more effective and less invasive.
They can screen for many cancers at once. A single blood test can look for signals linked to many types of cancer, including cancers that do not have routine screening tests today.
They are simple and convenient. The test requires only a quick blood draw—no special preparation, fasting, or recovery time needed.
They obtain answers faster and help determine next steps. Results are typically available within a few weeks. If a cancer signal is detected, your care team will guide you through any recommended follow‑up testing.
They provide peace of mind through proactive care. Whether or not a cancer signal is found, MCED testing allows you to take an active step in understanding and managing your health.

When to Request MCED Testing

You may want an MCED test if you are an adult:

Age 50 and older, because cancer is generally a disease of aging.
Under age 50 with increased risk due to family history, personal cancer history, lifestyle factors such as smoking history or heavy alcohol use, or certain health conditions such as obesity or diabetes.

Your healthcare provider can help determine if it’s right for you.

If you are 50 or older and have an average cancer risk, MCED testing is recommended to take place every 2 years. If your risk is higher, you may want to test every year. Talk to your healthcare provider to determine the best option for you.

Who MCED Testing Is Not Recommended For

This test is not recommended for individuals who are pregnant, under age 22, have been diagnosed with or treated for cancer within the past five years, or are experiencing symptoms suggestive of cancer.

The MCED Testing Process

Step 1: See if the test is right for you. Talk with your primary care provider to determine if you’re eligible for the test.

Step 2: If eligible, you’ll schedule a quick lab visit. The test requires only a standard blood draw—no fasting or special preparation needed.

Step 3: Your results are typically available within 4 weeks. If no cancer signal is found, no further action may be needed.

Step 4: If a cancer signal is detected, a member of the Duke MCED Clinic will contact you to review your results and recommend the next steps.

Throughout the process, your care team is available to answer questions and provide support.

This page was medically reviewed on 05/13/2026 by

Kevin C. Oeffinger, MD