Diagnostics·10 min read
What bloodwork actually matters in your 40s
ApoB, ferritin, hormones, inflammation — the markers worth knowing, and how to read them.
Diagnostic Tool·Diagnostics & Biomarkers
Elysium Index
Elysium Index is a biological age test from Elysium Health positioned around epigenetic analysis and cellular aging insights.
Diagnostics & BiomarkersAt-homeAdvancedCost $$$
Overview
What it is.
Elysium Index is a biological age test from Elysium Health positioned around epigenetic analysis and cellular aging insights.
Why it matters
Why it matters.
- Sits in the Diagnostics & Biomarkers pathway of the Atlas.
- Gives visibility into Biological age and Cellular aging — inputs most people otherwise guess at.
- Helps you decide what to track, test, or escalate next.
- Most useful as part of a broader healthspan strategy, not a single answer.
Best for
Best for.
People interested in biological age testing and tracking epigenetic aging signals over time.
What it tracks
What it tracks.
Biological ageCellular agingSupplements
Also relevant in
Secondary pathways.
Appearance & VitalityNutrition & Supplements
Trust & evidence
Trust & evidence signals.
These are editorial signals, not endorsements. Always pair with qualified medical guidance.
Emerging / WatchlistTransparent pricing
Decision support
Questions to ask before you buy.
A short due-diligence list to apply before paying, booking, subscribing, or building a routine around any longevity tool, test, or program.
01
What exactly will this measure, track, or improve — and over what time horizon?
02
Is there medical or clinician oversight, and how qualified are the people behind it?
03
How should I interpret the data, and what does a meaningful change actually look like?
04
What will I do differently with the results? If the answer is unclear, the signal isn't useful yet.
05
Is the claim evidence-led or marketing-led? Where is the underlying research?
06
What is the true cost after the first purchase, test, or subscription — including renewals?
07
Does this replace medical advice? It should not. Where does professional care still belong?
08
How does this compare to simpler, lower-cost, or higher-evidence alternatives?
Compare with
Compare with.
Diagnostic Tool
DexaFit
DexaFit offers DEXA body composition scans, VO2 max testing, RMR testing, and related health metrics.
$$ · IntermediateView
Diagnostic Tool
Ezra
Ezra offers full-body MRI screening aimed at detecting potential cancer and other abnormalities.
$$$$ · AdvancedView
Diagnostic Tool
Prenuvo
Prenuvo offers whole-body MRI screening and related imaging insights for proactive health assessment.
$$$$ · AdvancedView
Diagnostic Tool
10X Health
10X Health offers precision health testing, genetic testing, and optimization-oriented wellness programs.
$$$ · AdvancedView
Diagnostic Tool
Everlywell
Everlywell offers at-home health tests across hormones, heart health, food sensitivity, women’s health, men’s health, and general wellness.
$$ · Start HereView
Higher-caution resource
Biological age tests are emerging tools. Results should not be interpreted as diagnosis, guaranteed healthspan prediction, or proof of reversed aging.
Field notes
Related field notes.
Diagnostics·9 min read
DEXA, CGM, VO₂ max: which diagnostics are worth understanding
What each test really tells you — and where the marketing outruns the science.