Longevity practice
Alexis Peraino, MD, INC.
Westlake Village, CA
- Epigenetic age testing
- Multi-cancer early detection
- Genetic and polygenic testing
- DEXA body composition
Services / 06
The Longevity Registry Editorial Team · Last reviewed: September 25, 2026
Blood-based screening for circulating tumor DNA. Evidence grade: A. 58 practices in the registry list it.
Practices listing Galleri / Multi-Cancer Blood Test (18) →Practices listing Cancer Screening & Early Detection (57) →
What happens
A blood draw screened for circulating tumour DNA and protein markers, intended to flag a cancer signal and predict its tissue of origin before symptoms appear.
How to read the result
Specificity in the published validation studies is high, so a positive result deserves serious follow-up. Sensitivity is much lower for early-stage disease, which is the stage the test is marketed for.
Where it stops
These tests are laboratory-developed and are not a substitute for guideline screening — mammography, colonoscopy, low-dose CT. No randomised trial has yet shown a mortality benefit, and a negative result is not an all-clear.
Before you book
Where it's offered in the U.S.
San Francisco, CA (3)Atlanta, GA (3)San Francisco, CA (3)
Program spotlight
Biograph Membership — Biograph
A measured baseline across 1,000+ biomarkers — diagnostics first, no treatment arm.
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