Your body knows.
Now you will too.
One score. Your whole health story.
Zaro brings together your bloodwork, wearable signals, and lifestyle into one living number, then shows how that number compares to your peers and changes over time.
Sample output · your score reflects your actual data
Biological Ages
Biological Age
5 YRS YOUNGER
PhenoAge Model
Heart Age
3 YRS OLDER
AHA PREVENT
Exclusive to Signal and Source panels
Wearable Signals
300+ compatible devices supported
How You Compare
Better than 72% of people aged 35–40
Based on anonymized aggregate data within the same age group
Score Over Time
Health trend
From data to action. Every single day.
Most platforms hand you a report and hope you read it. Zaro's engine pair turns your biomarker data into a daily action plan that follows up with you until behaviour actually changes.
Recommendation Engine
Precision guidance, generated from your data
Every recommendation is tied directly to a specific marker in your blood. No generic advice, no guesswork. Only what your biology actually needs right now.
Updated after every panel run, prioritized by impact
Corrective Action Plan Engine
The adaptive notification engine that never gives up
Zaro's adaptive notification engine does not just send reminders. It observes your responses and notifies you differently based on your behaviour, asking targeted follow-up questions until the actual blocker is resolved.
Adaptive follow-up triggered by "Not yet"
Adapts based on your response, every single time
The loop that changes everything
Test once. Improve continuously.
"The gap between knowing and doing is where health fails. Zaro adapts to user routine and check-in based on user behaviour."
Three levels of understanding
No one in the market has packaged blood testing like this. Our cascade model moves from what has gone wrong, to what is developing, to the root causes beneath it all.
Surface
A foundational snapshot of your health today. Surface catches what has already crossed clinical thresholds — the baseline every adult should have at minimum once a year.
Signal
Everything in Surface, plus the early-warning markers that catch problems years before they become diagnoses. Signal is the panel cardiologists, endocrinologists, and longevity doctors actually order.
Source
Everything in Signal, plus the upstream markers that explain why your body performs the way it does. Source maps root causes across autoimmune thyroid, kidney function, coagulation, and cognitive risk — and unlocks your Biological Age and Heart Age scores.
Your wearable already knows a lot. We read it all.
Zaro connects with 300+ devices, syncing your sleep, HRV, activity, and continuous glucose data alongside your lab results.
Don't save your health dollars for when you're sick.
You have been setting aside pre-tax money in your FSA or HSA for years. Most people wait until something goes wrong to spend it. Zaro lets you use it differently: a small investment in comprehensive testing today catches the slight imbalances in your biology before they grow into the costly conditions that drain your savings. Spending a little now is how long, healthy living actually works.
From order to answers in days.
No waiting rooms. No referrals. No insurance hoops. Order online, choose how you want your blood drawn, and get results that actually make sense.
See the full process →Choose your panel
Pick Surface, Signal, or Source based on how deep you want to go. FSA/HSA accepted.
Schedule your draw
Visit one of 10,000+ Quest or LabCorp locations nationwide, or book an at-home phlebotomist.
Get your results
Results are ready in 5–7 business days, delivered to the Zaro app with plain-language explanations.
Know your Zaro Score
Your results are synthesized into a 0–100 Zaro Score across 7 health domains, updated every time you test.
Processed by the labs your doctor uses
Every Zaro panel is processed at CLIA-certified Quest Diagnostics or LabCorp facilities, the same labs behind your physician-ordered tests.
At-home phlebotomy + patient service center visits available nationwide
Start knowing your body.
Choose a panel, schedule your blood draw, and get answers that actually explain what is happening inside your body.