GRAIL Cancer Test | Function Health

Add-on test

GRAIL Cancer Test

A first-of-its-kind multi-cancer early detection blood test that screens for 50+ cancers from a single draw.

$899$749Member price

*Function membership cost not included.

Join Function to purchase Already a member? Login to purchase

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:

GRAIL Cancer Test

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.

What do we test for?

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.

Who should take this test?

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.

What to expect

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.

How often testing is recommended

The GRAIL Cancer Test is designed to be taken annually as part of an ongoing proactive screening strategy.

Simple & easy testing:

  1. 1

Purchase the test through your Function account

Log in to your Function membership to buy any add-on package. New to Function? Sign up for a membership to get started.

  1. 2

Schedule your Quest Diagnostics appointment

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.

  1. 3

Get your results and personalized insights

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.

GRAIL Cancer Test

Lab collection

“Early detection has given me this amazing gift of extra years, probably extra decades, with my family.”

Mike M.

Age 45

“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.”

Sam H.

Age 72

“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.”

Holly H.

Age 71

Take control before cancer does

Only 5% of cancers have recommended preventive tests.

Most cancers aren’t routinely checked for by doctors.

Over one-third of people will face cancer in their lifetime.

Proactive screening helps catch cancer when it’s most treatable.

Half of cancers are found at a late stage.

Late stage treatment is harder and survival rates drop dramatically.

The same cancer, two different outcomes

Discover how early detection can transform your life—and reduce the cost of care.

Caught Early (Stage 1)

Caught Late (Stage 3-4)

Aimee's story

The cancer signals doctors missed

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.