Metabolomics is the large-scale study of small molecules — called metabolites — present in a biological sample. These molecules are the direct downstream products of cellular processes: the end result of how your body is actually functioning right now, not just what your genes say you might do or what your proteins are capable of doing.
LC/MS metabolomics — liquid chromatography–mass spectrometry metabolomics — is the most sensitive and specific analytical technology available to measure these molecules. It is the gold standard for comprehensive metabolic profiling, used by leading academic medical centers, pharmaceutical companies, and increasingly, elite sports organizations.
Metaba Health deploys LC/MS metabolomics as its core analytical platform to deliver molecular clarity for sports teams, concierge clinics, and research institutions.
How LC/MS Works
Liquid chromatography–mass spectrometry combines two analytical techniques into a single, powerful pipeline:
- Liquid chromatography (LC) separates the thousands of different molecules in a biological sample — blood, serum, plasma, or urine — by passing them through a column at different rates based on their chemical properties. This prevents molecules from interfering with each other during measurement.
- Mass spectrometry (MS) then identifies and quantifies each separated molecule by measuring its mass-to-charge ratio. This provides both identity (what the molecule is) and concentration (how much of it is present).
The combination is powerful because LC handles the separation complexity while MS provides the precision measurement. Modern high-resolution mass spectrometers can detect molecules at femtomolar concentrations — trillionths of a mole per liter — making them extraordinarily sensitive.
What LC/MS Metabolomics Actually Measures
A single LC/MS metabolomics run can capture over 3,000 distinct molecular features from a single blood or urine sample. These fall into several major categories:
| Metabolite Class | Examples | Biological Relevance |
|---|---|---|
| Amino acids | Tryptophan, Glutamine, BCAAs | Muscle synthesis, recovery, immune function |
| Organic acids | L-Lactate, Succinate, Citrate | Energy metabolism, mitochondrial function |
| Lipids & fatty acids | Carnitines, Ceramides, LPCs | Fat oxidation, inflammation, membrane health |
| Nucleotides | AMP, ADP, ATP, cAMP | Energy currency, cellular signaling |
| Vitamins & cofactors | NAD+, Riboflavin, Coenzyme Q | Oxidative phosphorylation, antioxidant capacity |
| Hormones & metabolites | Cortisol-sulfate, DHEA-S | Stress response, anabolic state |
| Microbiome-derived | Short-chain fatty acids, Bile acids | Gut health, immune modulation |
Untargeted vs. Targeted Metabolomics
There are two distinct approaches to LC/MS metabolomics, each with different use cases:
Untargeted (Global) Metabolomics
Untargeted metabolomics captures as many metabolites as possible without pre-specifying what to look for. This approach is ideal for discovery — finding unexpected patterns, novel biomarkers, or metabolic signatures you didn't know to look for. It produces thousands of data points per sample and is most powerful for longitudinal monitoring, where you compare an athlete's or patient's profile against their own baseline over time.
Targeted Metabolomics
Targeted metabolomics measures a pre-defined list of metabolites with absolute quantification against validated reference standards. This approach produces clinically reportable concentrations (e.g., "Tryptophan: 62.4 μM") that can be compared against normal reference ranges. It is used when you need defensible, clinical-grade numbers — for instance, when a report needs to inform a treatment decision or enter a clinical trial dataset.
Metaba Health approach
Why Metabolomics Is at the Bottom of the Omics Pyramid — and Why That Matters
The life sciences have several "omics" layers that describe biology at different levels:
- Genomics — the DNA blueprint (what might happen)
- Transcriptomics — gene expression (what is being planned)
- Proteomics — proteins present (what is being built)
- Metabolomics — metabolites present (what is actually happening)
Metabolomics is the closest layer to phenotype — to what is actually happening in the body right now. It integrates the effects of genetics, environment, diet, stress, training load, and everything else. This makes it uniquely valuable for performance and health applications where you need real-time biological truth, not genomic probabilities.
How Metaba Health Uses LC/MS Metabolomics
Metaba Health's LC/MS platform is optimized for three core applications:
- Elite athletics: Monitoring performance readiness, fatigue, and recovery trajectory across a season. Our proprietary Performance Readiness Index (PRI) distills thousands of data points into a single actionable score per athlete.
- Concierge and longevity medicine: Providing clinicians with a comprehensive metabolic baseline that goes far beyond standard bloodwork — capturing energy system efficiency, micronutrient sufficiency, oxidative stress burden, and more.
- Translational research: Delivering standardized, batch-corrected, CLIA-aligned data outputs suitable for clinical trial endpoints, academic publication, and multi-site studies.
If you want to understand what LC/MS metabolomics can do for your team, clinic, or study, book a 20-minute introduction call. We'll walk through your specific use case and show you a sample report.