Lab & biomarker tests
Understand a lab result
Look up any test on your report and get what the numbers mean, when to retest, and what to do next.
Browse 122 tests
Mental-health self-checks
Check your mental health
15 validated questionnaires used by clinicians — scored privately in your browser. Nothing saved.
Take a self-check
Why Symptomatik
Health information held to a higher standard.
Written in plain language
No jargon walls. Every test and result is explained the way a careful clinician would — calmly, in words you can use.
Every page cites its sources
Each explainer is grounded in peer-reviewed research and authoritative guidance, with the sources listed on the page — not hidden.
Private by default
No account, no sign-up. Your self-assessments are scored in your browser and never leave your device.
Symptomatik is health information, not a diagnosis. It does not replace a consultation with a qualified clinician.
Private self-assessment
Mental health deserves the same plain language as a blood test.
15 validated instruments — PHQ-9, GAD-7, DASS-21, PCL-5 and more — scored instantly and privately in your browser. No account. Nothing saved. Just a clear, honest read on where you are right now.
See the self-checksStart here
Popular explainers
Free tools
Health calculators
Run a quick number and get a visual result with plain-language interpretation — not just a figure.
- BMI calculator
- TDEE calculator
- Ideal weight calculator
- Body fat calculator
- Blood pressure category
- HbA1c to average glucose
- Cholesterol ratio
- eGFR calculator
- Creatinine clearance calculator
- Corrected calcium calculator
- Anion gap calculator
- FIB-4 calculator
- BUN/creatinine ratio calculator
- HOMA-IR calculator
- QTc calculator
- Waist-to-hip ratio calculator
- LDL cholesterol calculator
- SCORE2 calculator
- PREVENT calculator
- ASCVD risk calculator
- Child BMI calculator
- Sleep calculator
- Mean arterial pressure (MAP) calculator
- Serum osmolality calculator
- Pack-year calculator
- Protein intake calculator
- BSA calculator
- Pregnancy weight gain calculator
- Due date calculator
- Ovulation calculator
On the way
We are building toward a complete picture of your health.
Symptom checker
Describe what you feel and get clear, sourced guidance on what it might mean and what to do next.
Lab results interpreter
Upload a full lab panel and get a plain-language read of every value at once — not one test at a time.