Saturday, October 17, 2026 · Edition updated 6:00 AM ETSAT, OCT 17 · 6 AM ET editionNext edition in Next --:--:--
Get the weekly brief

Longevity tests, compared honestly

What each test measures, what it costs, and what outside reviewers say a result can tell you.

Read from each company's own page
Prices checked Oct 16, 2026
5
Tests compared on this page
$249–$499
Price range, checked Oct 16, 2026
1
Outside reviews, each linked to its source
Show

Companies cannot pay to change what we show.

Before you buy

Three ways tests measure aging

The number on your report depends on what the test reads. Here is what each kind looks at, in plain words.

DNA methylation clocks

Chemical tags on your DNA shift as you age. A clock reads thousands of them and estimates a biological age.

What the research shows so far
Strong for large groups of people. Less certain for one person tracked over time.

Antibody glycans

Sugar chains attached to your antibodies change with age and inflammation. A newer approach with a smaller research base.

What the research shows so far
Promising research, with fewer independent studies so far.

Blood biomarker panels

Standard lab measures like blood sugar, cholesterol and inflammation, sometimes combined into an age score.

What the research shows so far
Each marker is well studied. Combined age scores are less so.
Questions people ask

Before you spit, prick or swab

No. These tests estimate how your body compares with other people your age. They are useful for spotting trends and starting a conversation with your doctor, not for predicting a lifespan.

Small changes between two tests can be measurement noise. Each review explains how big a change needs to be before it means something, and when retesting is worth the money.

It depends on the test, not just the sample. A finger-prick kit can be reliable for some markers and weaker for others. Each review lists what the company has published on accuracy.