How is this different from a standard blood panel?

A standard panel reads concentrations. A metabolomic panel reads flow. It tells me how your cells are actually using the building blocks you are giving them, which is a fundamentally different question.

Can I do this on its own?

Not as a standalone test. The interpretation is most of the value, and that takes knowing your history and your goals. If the testing is worth doing for you, I will say so at a Whole Health Workup.

Pillar 01 of 07

A window on current chemistry

Daniel Tagge, MD
Last revised 2026-09-18

All seven pillars

Metabolism & Metabolomics.

Urinary organic acids read the upstream patterns of energy production, neurotransmitter balance, detoxification, and recovery.

The small molecules your cells produce as they make energy, build, repair and clear waste. Because they change with diet, activity, medications, the microbiome and disease, they can offer a view of what is happening biologically now. In this framework metabolomics is a foundational way of looking; in practice it is used when it adds to standard laboratory medicine.

The system

What it is, and why it matters.

What it is: Metabolomics tracks the small molecules your cells produce as they convert food into energy, build neurotransmitters, process hormones, and clear toxins. Organic acids in urine, amino acids in blood, fatty acids in a bloodspot, and elemental status across both. Each marker is a footprint of a real cellular process.
Why it matters: A standard panel tells you what is wrong. A metabolomic panel tells you what is going right and where it is breaking down. It is the difference between waiting for disease and reading the biology that produces it. When your cells are not making energy efficiently, you feel it long before any conventional marker moves.
What I read for: Patterns across organic acids that point to a specific bottleneck. A B-vitamin gap. A mitochondrial inefficiency. Bacterial overgrowth metabolites bleeding into the urine. Neurotransmitter precursor problems. The point is to localize the dysfunction so the intervention is targeted, not generic.

What it can look like

When this system is under strain.

None of these is specific to this system, and none of them diagnoses anything. They are the presentations in which I find this system worth reading.

Fatigue that does not match what you would expect from your lifestyle.
Brain fog and mood instability that come and go without an obvious trigger.
Recovery from training that takes longer than it used to.
Persistent inflammation, low-grade and chronic.
A general sense that your biology is operating at 70%, not 100%.

Evidence boundaries

What can and cannot be measured.

Stated plainly, so this page never reads as a promise. The standard for how evidence is weighed is on the framework.

Can show

Which small molecules are present in a sample now, and in what relative amounts.
Patterns that raise a question worth checking against the history and standard laboratory medicine.
Change over time in the same person, when the same method is repeated.

Cannot show

A diagnosis. A metabolomic pattern is a question to interpret in context, not an answer.
That a symptom is caused by what a profile shows.
A validated clinical target for most markers. Commercial metabolomic and organic-acid panels are not established clinical tools for fatigue, brain fog or weight.

What clarifies it

What information tends to clarify this system.

Two ways to read this system, depending on the depth you want.

Cellular nutrition read through iron studies, B12, RBC folate, homocysteine, magnesium, zinc and vitamin D, alongside the metabolic picture.

Testing is chosen for a patient when a result is likely to change a decision, and billed by the laboratory at its own price. Talk to me

Everyday levers

What tends to help, in general.

General levers, not a protocol. Which of them applies to a given person, in what order and at what dose, is decided in care, against that person’s history and results.

Eat whole foods, broadly
Diversity of plants is the strongest signal for metabolic resilience. Aim for 30 different plants per week.
Target specific cofactors
B vitamins, magnesium, zinc, and carnitine all sit at metabolic chokepoints. Supplement what your data says you need.
Aerobic training
Zone-2 work builds mitochondrial density. Two to four hours per week is the threshold dose.
Sleep and stress
Both shape methylation, neurotransmitter synthesis, and detoxification in ways no supplement can replicate.
Reduce the exposomic load
Heavy metals, mycotoxins, and plasticizers all consume the same enzymes you need for normal metabolism.

Go one level deeper.

Symptoms: Presentations this system can contribute to: brain fog, perimenopause, low libido, hair loss, erectile dysfunction, high cholesterol concern, high blood pressure concern, food cravings.
Essays: What is metabolomics? A working definition for patients.
All essays on this system
The Report: Recent issues that covered this pillar:
Wednesday, November 4, 2026: Eight weeks of running reshaped nearly every tissue in mice, and the response depended on sex and on the time of day it was measured.
Wednesday, October 28, 2026: Fat molecules grow longer tails as animals and people age, and trimming them back extended lifespan in worms.
Wednesday, October 21, 2026: In mice, a spoonful of olive oil before sugar blunted the blood-sugar spike, and the order of the meal did the work.
Connected systems: No system stands alone. Mitochondria & Cellular Energy · Exposomics · Epigenetics
The framework: How this pillar sits with the other six, the method, and the order of intervention: how I think.

Questions

About metabolism & metabolomics

How is this different from a standard blood panel?: A standard panel reads concentrations. A metabolomic panel reads flow. It tells me how your cells are actually using the building blocks you are giving them, which is a fundamentally different question.
Can I do this on its own?: Not as a standalone test. The interpretation is most of the value, and that takes knowing your history and your goals. If the testing is worth doing for you, I will say so at a Whole Health Workup.

This system, in your case

Reading it in general is not reading it in you.

Start with the Perspective Visit: a 30-minute video call and Your First Step Plan the same day. The Whole Health Workup is the full visit.

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Written by

Daniel Tagge, MD

Board-certified family physician and founder of Tagge Precision Health. Certified in Health Optimization Medicine.

About Dr. Tagge