Diagnostics

Biomarkers, imaging and the tests entering the longevity visit.

Diagnostics · Screening & Prevention

Alzheimer’s blood tests are for symptomatic patients, not screening

Four Alzheimer's blood tests now have FDA clearance, including PrecivityAD2 and Roche's Elecsys pTau217.

By longevitydocs™ editorsSep 27, 2026
Alzheimer’s blood tests are for symptomatic patients, not screening
Diagnostics · Biomarkers

Which longevity data is worth acting on?

For years, we said we didn’t have enough data for precision medicine. Now we have more than we can interpret.

By David Luu, MDSep 27, 2026
Which longevity data is worth acting on?
Diagnostics · Screening & Prevention

Multi-cancer blood test performance in 35,900 adults (PATHFINDER 2)

PATHFINDER 2 evaluated the Galleri multicancer detection test in adults aged 50 and older.

By longevitydocs™ editorsSep 27, 2026
Multi-cancer blood test performance in 35,900 adults (PATHFINDER 2)
Diagnostics · Biological Age

Aging Rate Indicators (ARI) measure pace, not accumulated age

A biological-age clock is an odometer: how far you have aged. An aging rate indicator, or ARI, would be a speedometer: how fast you are aging now.

By longevitydocs™ editorsSep 20, 2026
Aging Rate Indicators (ARI) measure pace, not accumulated age
Diagnostics · Biomarkers

The Biomarker Gold Rush

Function Health raised $298M, dropped membership to $365/year, and launched Medical Intelligence Lab: an AI engine merging 160+ biomarkers, full-body imaging, wearables, and medical records into personalized protocols.

By David Luu, MDNov 23, 2025
The Biomarker Gold Rush
Diagnostics · Screening & Prevention

Longevity on a budget: the 50-cents-a-day promise

A VC-backed startup has launched a $199-per-year membership that promises to detect “over 1,000+ preventable conditions” through annual lab testing.

By David Luu, MDAug 24, 2025
Longevity on a budget: the 50-cents-a-day promise

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