A first-of-its-kind multi-cancer early detection blood test that screens for 50+ cancers from a single draw.
*Function membership cost not included.
GRAIL is a multi-cancer early detection test, a blood test that screens for many of the deadliest cancers before they become symptomatic, including those with no recommended screening tests today.
What’s tested:
The GRAIL Cancer Test screens for signals associated with more than 50 types of cancer using just one blood draw. The test may identify cancer signals before clinical symptoms appear, offering an opportunity to find cancer earlier as part of a broader, proactive screening approach.
The GRAIL Cancer Test screens for a signal associated with more than 50 types of cancer from a single blood draw. A cancer signal detected result does not diagnose cancer on its own, but it can indicate that follow-up diagnostic evaluation is warranted.
This add-on is designed for Function members who want a proactive, multi-cancer early detection test alongside their broader health data.
It can be a useful option for adults who want to add more visibility beyond standard screening pathways, especially for cancers that do not have routine screening tests today.
Results are reported through your Function account. In general, the test returns either a No Cancer Signal Detected result or a Cancer Signal Detected result.
If a signal is detected, the report may also indicate the most likely tissue of origin to help guide next steps with your care team.
The GRAIL Cancer Test is designed to be taken annually as part of an ongoing proactive screening strategy.
Simple & easy testing:
Log in to your Function membership to buy any add-on package. New to Function? Sign up for a membership to get started.
Book your blood draw through Function, either in the app or online. It’s quick and easy, with access to 2,000+ Quest locations nationwide.
Your results will appear directly in the Function app or website, along with personalized action insights to help you understand and act on your data.
“Early detection has given me this amazing gift of extra years, probably extra decades, with my family.”
“I’m a lifelong athlete and I’ve always taken my health seriously so I was shocked that the Function scan showed stage 3 kidney tumors on both kidneys. My physician says taking the scan has given me a chance for a longer life.”
“When I got the results of the scan, I didn’t feel afraid or nervous. I felt like, well, this is good. I’m catching this early. I didn’t need radiation, I didn’t need chemotherapy.”
5%
Most cancers aren’t routinely checked for by doctors.
1 in 3
Proactive screening helps catch cancer when it’s most treatable.
50%
Late stage treatment is harder and survival rates drop dramatically.
Discover how early detection can transform your life—and reduce the cost of care.
Outcome #1
Outcome #2
Aimee's story
Aimee's story shows why proactive screening matters. When broader testing surfaced cancer signals her doctors had missed, she gained clearer next steps and a faster path to follow-up care.
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