The Metabolic Precision Suite · Patent pending
Know your biological fitness age.
A single, objective assessment of how your body is actually aging — cardiorespiratory fitness, body composition, and strength, compiled into one clear score. Open to all, no membership required.
What you learn
Two clear answers, from three direct measures.
Each measure is established medicine that independently predicts mortality and the loss of function. Alternity compiles them into named outputs you won’t get from a standard physical.
Three measures
Cardiorespiratory fitness
The strongest single biomarker of longevity.
Read at rest by seismocardiography (VentriJect) and validated against the gold-standard exercise test — measured directly, not estimated from a wrist.
Body composition
Lean mass, visceral fat, and bone density.
Functional strength
A validated marker of whole-body resilience.
Two outputs
Healthspan Index
Your biological fitness age
A single score, 0–100, for how your body is functioning against the calendar.
Sarcopenia Risk Score
An early neuromuscular flag
Your risk of age-related muscle loss — the frailty that begins decades before it’s felt.
The named, compiled outputs are proprietary to Alternity and patent pending. The individual measures are established medicine.
How it works
Four steps, one visit.
01
Book
Choose an assessment, check out, and sign the consent. No referral or membership required.
02
Measure
VO₂, DEXA body composition, and grip strength — taken in a single, unhurried visit.
03
Read
Your measures are compiled into a Healthspan Index and Sarcopenia Risk Score.
04
Return
Re-test over time to see the trend — the number that matters most.
Assessments
Transparent, single-visit pricing.
Pay per assessment, or save with a multi-visit package to track your trend across the year.
MPS Assessment
$350
VO₂ + DEXA + grip → Healthspan Index & Sarcopenia Risk Score. Packages from $275/visit.
Body Composition
$250
DEXA lean mass, visceral fat & regional detail. Packages from $210/scan.
Bone Density
$375 / $300 with MPS
DEXA bone mineral density, including Trabecular Bone Score (TBS). Discounted when added to an MPS assessment.
Real data. Real results.
A number you can act on.
“In eight weeks, my VO₂ score improved 12% and my visceral fat dropped 15%, confirmed by DEXA. Seeing my numbers changed everything.”
A.H. · Alternity Member
“As a coach, having objective VO₂ and DEXA data lets me tailor training with confidence. It’s next-level feedback.”
J.T. · Performance Specialist
For physicians, trainers & nutritionists
Refer your patients. Get the answers back.
Send the people you care for to us for objective assessment — we handle the testing and return a clear report you can act on. Pre-purchase evaluation packages at a partner rate; no equipment, no overhead.
- Discounted evaluation packages
- Clear reports returned to you
- No equipment, no overhead
- The relationship stays yours
Measure what matters.
One visit. Two answers you can act on. Open to all — no membership required.
Book an assessmentQuestions about the assessment?
A few of the things people ask before they book. Tap any one.
It's a single number for how your body is actually functioning, against the calendar. We measure cardiorespiratory fitness, body composition and strength, then compile them into one score — the Healthspan Index, 0 to 100 — which we also express as a biological age.
It's a starting point and a trend line, not a verdict. The value is watching it move as you train and change.
Three direct, established measures in one visit: VO₂ (cardiorespiratory fitness), a DEXA scan (lean mass, visceral fat and bone density), and grip strength (functional resilience).
Those three feed two compiled outputs: your Healthspan Index and a Sarcopenia Risk Score — an early flag for age-related muscle loss.
We estimate VO₂ using a VentriJect sensor rather than a full mask-and-treadmill protocol, so it's quick and comfortable while still giving a reliable reading.
VO₂ is the single strongest biomarker of longevity, which is why it anchors the assessment.
They work in completely different ways. A wearable infers VO₂ indirectly — from how your heart rate responds to pace during activity, run through a general algorithm. It's a convenient estimate, not built as a clinical measure, and it can drift with fit, stride and conditions.
VentriJect measures the heart directly: a sensor on the chest reads the mechanical signal of each beat at rest, in a few minutes, with no exercise. It's validated against the laboratory gold standard — a maximal exercise test with gas exchange — which is what makes the reading reliable enough to anchor your Healthspan Index.
The individual tests — VO₂, DEXA and grip strength — are established medicine, available anywhere with the equipment. We don't claim those.
What's ours is how they're compiled: the named outputs — Healthspan Index, Biological Fitness Age and Sarcopenia Risk Score — are proprietary and patent pending.
The full MPS Assessment is $350, with multi-visit packages from $275 a visit. A standalone DEXA body-composition scan is $250, and bone density is $375 — or $300 added to an MPS assessment.
Everything is single-visit and transparent; no membership pricing.
See assessments & bookNeither. Alternity Metrics is open to all — you choose an assessment, check out, and sign the consent. One visit, no membership required.
Book an assessmentI can't read or interpret results — that's the part a clinician does. After your assessment, your measures are read in context and explained to you directly.
I'm happy to explain what each measure is and how the visit works before you come in.
Anything else, our team is a message away — or book and bring your questions to the visit. This isn’t medical advice.