Product Guides / Services and Equipment
Whole-Body MRI and Multi-Cancer Blood Tests Guide
Humanic Blue’s Longevity365 guide: A cancer-related signal in blood and an image of an organ are different findings. Galleri, Prenuvo and Ezra sell different screening routes, with different coverage and follow-up questions.
Explore the productsFor readers interested in living longer and better, finding a possible abnormality is only one part of screening. False alarms, missed disease and the testing that follows also matter.
01 / Our approach
How did we evaluate these products and services?
We compared blood-signal testing with MRI, the exact package described and current company regulatory statements. A favorable advisory vote is different from final FDA approval.
Health Screenings in Your 50s: evidence and sources02 / The takeaways
What did the source evidence show?
- Galleri’s current site states that the test is not FDA cleared or approved.
- Prenuvo says its MRI does not replace standard screening. Ezra’s base Annual MRI covers specified regions, not every body part.
- A negative result does not rule out cancer; an abnormal result can require further diagnostic testing.
Who would arrange and interpret follow-up after an unexpected finding?
The products and services
What is distinct about each product or service?
The order is not a ranking. The profiles explain what each named offering provides and how it is accessed.
The matrix compares the named formats and access arrangements, rather than awarding a clinical winner.
Product 01 / 03
GRAIL Galleri
Service or device formatPrescription multi-cancer blood test
GRAIL says Galleri looks for cancer-related DNA signals across more than fifty cancers and predicts the likely source of a signal. It is not a test of inherited or future genetic cancer risk.
The current site says Galleri is not FDA cleared or approved; a favorable September 2026 advisory vote was not final approval. The company describes elevated-risk adults, such as people fifty and older, and exclusions including pregnancy, age twenty-one or younger and active cancer treatment. Positive signals need confirmation; negative results can miss cancer.
Product 02 / 03
Prenuvo Whole Body Scan
Service or device formatMRI screening service
Prenuvo describes a whole-body MRI in under an hour, without ionizing radiation or injected contrast. Memberships and advanced packages can add other scans, laboratory tests or clinician review; those extras are not assumed to be in the base scan.
Prenuvo says the scan does not replace guideline-based screening. Its FAQ excludes screening during pregnancy and currently excludes people with pacemakers, while assessing other implants individually.
Product 03 / 03
Ezra / Function Annual MRI
Service or device formatSpecified-region MRI package
The current Ezra page, branded with Function, describes its base Annual MRI as a twenty-two-minute scan of the head, neck, abdomen and pelvis. A separate forty-seven-minute package adds the spine.
The base scan excludes several regions, including chest, lungs, heart and breasts. MRI uses no ionizing radiation, but that description does not extend to a separate CT service. Software clearance for image enhancement is not approval of population cancer screening.
What does the named package leave outside its coverage?
Reader Questions
A few questions to consider while reading the evidence.
- Which distinction changes what you would expect from this service?
- What would the result or program leave for a clinician to explain?
Extra Insights & Sources
For readers who want the evidence and comparison details behind this guide.
Product comparison matrix
How do the products and services compare?
This matrix summarizes the product profiles above. Amounts describe the named label or service, not a personal treatment plan. It is not a scorecard or ranking.
| Question | GRAIL Galleri | Prenuvo Whole Body Scan | Ezra / Function Annual MRI |
|---|---|---|---|
| Route | Blood DNA-signal analysis | MRI | MRI |
| Named scope | Company says signals associated with 50+ cancer types | Whole Body Scan; extras vary | Base: head, neck, abdomen, pelvis |
| Important distinction | Not FDA cleared / approved; signals need confirmation | Does not replace standard screening | Spine and other packages separate |
Sources
- Health Screenings in Your 50s
- GRAIL Galleri — official listing
- Prenuvo Whole Body Scan — official listing
- Ezra / Function Annual MRI — official listing
Image credits
Disclosures
Company descriptions and benefit claims are attributed. Inclusion is not an endorsement, diagnosis or personal treatment recommendation.