Most health advice promises to hand you the answer. We would rather teach you to find it: what to test, what the numbers mean, and whether what you changed worked.
The big testing services charge hundreds of dollars a year to hand you a hundred numbers and an app. We do the opposite. We help you find the few markers that matter most for you, understand them, improve them, and order them affordably through a trusted lab partner, with no subscription and no agenda.
We earn a small commission when you order through our links, but only on things that clear our evidence bar. That is what keeps this free and independent, instead of charging you for a membership. See how we work →
An answer settles one question. A method settles the next twenty. This is the loop everything here is built to teach, and it is the same one whether you are chasing fatigue or a cholesterol number.
Notice what your body is doing.
Turn the complaint into something testable.
Order the few markers that answer it.
Change one thing, deliberately.
Find out whether it worked on you.
Keep the result. It is your evidence now.
There is no single front door. Pick the one that fits where you are today.
You have recent labs See where every marker stands against optimal, and get a ranked plan of what to work on first.
Open the Compass →
You're ready to test Pick what sounds like you and get a focused list of the markers worth ordering, not a hundred you don't need.
Find what to test →
You're just curious Browse the library and a few guides to find out what a blood test can tell you. No numbers required to begin.
Explore the library →Every marker explained in plain language and grouped the way your body works. Start with the system you are curious about.
Nutrients Nutrition, absorption & micronutrient metabolism
Vitamin D · Vitamin B12 · Methylmalonic Acid (MMA) · +8 more
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Cardiovascular Circulatory system & cardiovascular health
ApoB · ApoA1 · Standard Lipid Panel · +6 more
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Thyroid & Hormones Endocrine system & hormonal signaling
TSH · Free T3 · Free T4 · +4 more
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Immune & Inflammation Immune system & inflammation
hs-CRP · Fibrinogen · Ferritin · +2 more
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Liver & Kidney Liver, kidneys & detox pathways
Comprehensive Metabolic Panel · ALT · GGT · +2 more
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Metabolic Mitochondria, glucose metabolism & metabolic flexibility
HbA1c · Fasting Glucose · Fasting Insulin · +1 more
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Blood & Oxygen Blood cells, oxygen transport & clotting
Complete Blood Count · Hemoglobin
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Stress & Circadian Brain, circadian master clock & central nervous system
Cortisol
→Most lab results say normal and leave you no closer to understanding yourself. That is a failure of communication, not biology.
Evidence-graded guides to the habits, foods, and tools that move your biology, with clear takes on what is worth your money. No numbers required.
Why testing a hundred markers at once backfires, and how focusing on a few changes everything.
The single best exercise for metabolic health and longevity, and how to find your zone.
One of the most overhyped supplements there is. Who benefits, and how to know whether you do.
Most people fall short, and it gets worse with age. How much you need, food versus powder.
The iron in your blood was made inside a star. So was the calcium in your bones. Looking outward has always been a way of looking at what made us. Start with a single reading, and begin tuning yourself back into coherence with the world that made you.
