Urinary Succinic Acid (Succinate)
Dicarboxylic acid intermediate oxidized to fumarate by succinate dehydrogenase (SDH / Complex II of the respiratory chain).
Standard vs. Optimal Reference Rangesug/mg Cr
Standard reference intervals represent the statistical 95% distribution of unselected commercial populations. Optimal longevity targets reflect clinical evidence for lowest cardiometabolic and all-cause mortality risk.
Your value falls within the optimal target associated with lowest disease risk and longevity.
1.0 - 15.0 ug/mg Cr
General reference distribution across unselected commercial populations.
2.0 - 10.0 ug/mg Cr
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
SDH links the TCA cycle directly to the electron transport chain; genetic or toxic SDH inhibition accumulates succinate.
Differential Diagnosis
Elevated Levels (Succinate High)
- •Mitochondrial Complex II / SDH inhibition (heavy metals, riboflavin deficiency)
- •Pseudohypoxic metabolic state
Low Levels (Succinate Low)
- •Normal respiratory chain Complex II electron transfer
- •Optimal ubiquinone reduction
Technical Reference & Deep Dive
Biochemistry & Enzymatic Pathways
Longevity Risk Architecture & Epidemiology
Pre-Analytical Caveats & Diagnostic Workup
Pre-Analytical Considerations:
Specimen collection should follow standardized phlebotomy protocols. Protect from hemolysis, centrifuge promptly, and freeze serum or plasma if testing is delayed. Patient should be in a resting, fasting state where indicated.
Reflexive Testing Protocol:
- Confirmatory testing and secondary biomarker quantification for Succinate
- Targeted organ system imaging or functional dynamic testing related to mitochondrial complex ii & oncometabolite
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Urinary Succinic Acid - The New England Journal of Medicine (2021). PMID: 34190124
- [2]Succinate Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35422901
Associated Longevity Guides & Clinical Calculators
Medicine 3.0Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Urinary Succinic Acid (Succinate) into overall healthspan optimization.