YOUTHEN.AIOpen PhenoAge Run your panel

The open biological age calculator

Measure the biology of your age.

YOUTHEN translates nine routine blood chemistry markers into the Yale PhenoAge model. Bring a recent physical, see the signal, and size a protocol without a $300 lab kit or a six-week wait.

Enter your results Read the method

Your blood panel

Use the value and reference unit shown on your lab report.

Chronological age

Required
yrs
Age at the time of the blood draw.

Nine routine biomarkers

Values from a standard CBC and metabolic panel
g/dL
Protein made by the liver.
mg/dL
Kidney filtration marker.
mg/dL
Use a fasting value when available.
mg/L
High-sensitivity CRP if reported.
%
Relative lymphocyte percentage.
fL
Mean corpuscular volume.
%
RDW-CV percentage.
U/L
Liver and bone enzyme.
10³/µL
Total white blood cells.

Start with a reference panel

Tap to load, then edit
This tool is educational. A clinician should interpret abnormal results, symptoms, and trends. Check that every field contains a plausible number.

Longevity protocol sizer

Turn the signal into a practical month.

Select the levers you can sustain. The estimate shows the modeled age contribution and the monthly investment side by side.

A result worth keeping

Your panel, rendered as a technical specification.

Download a 1200 × 630 image or share a link that carries this setup in its URL hash. No account and no upload required.

Partners that fit the workflow

Keep the measurement stack close to the source.

Relevant sponsor inventory for testing, supplements, and education. Any paid relationship should be disclosed clearly before a click.

Make the next six months measurable.

Export your personalized protocol for a clinician or book a structured review of your results and habits.

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Frequently Asked Questions (FAQ & Verification)

What is PhenoAge?
A clinically validated biological age calculation by Yale Dr. Morgan Levine.
Which biomarkers are required?
Albumin, Creatinine, Glucose, CRP, Lymphocyte%, MCV, RDW, AlkPhos, and WBC.
How accurate is biological age?
It outperforms chronological age in predicting disease onset and longevity.
How often should I test?
Every 3 to 6 months to measure the biological impact of lifestyle interventions.
Is my medical data sent to a server?
No, all calculations run 100% in-browser on your local device.