Urinary beta-Hydroxy-beta-Methylglutarate (HMG (Urine))
Intermediate in leucine catabolism, ketogenesis, and the mevalonate pathway synthesized by HMG-CoA synthase.
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.
0.5 - 5.0 ug/mg Cr
General reference distribution across unselected commercial populations.
1.0 - 3.5 ug/mg Cr
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Converted to mevalonate by HMG-CoA reductase for cholesterol and CoQ10 synthesis, or cleaved by HMG-CoA lyase into acetoacetate.
Differential Diagnosis
Elevated Levels (HMG (Urine) High)
- •Functional Coenzyme Q10 biosynthesis impairment
- •HMG-CoA lyase deficiency (inborn error)
- •Statin-induced pathway alterations
Low Levels (HMG (Urine) Low)
- •Optimal mevalonate and CoQ10 biosynthetic flow
- •Normal ketogenesis
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 HMG (Urine)
- Targeted organ system imaging or functional dynamic testing related to mevalonate & ketogenesis intermediate
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Urinary beta-Hydroxy-beta-Methylglutarate - The New England Journal of Medicine (2021). PMID: 34190124
- [2]HMG (Urine) 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 beta-Hydroxy-beta-Methylglutarate (HMG (Urine)) into overall healthspan optimization.