Urinary Phthalate Metabolites (MEHP / MBP)
Hydrolyzed primary and secondary metabolites of di(2-ethylhexyl) phthalate (DEHP) and dibutyl phthalate (DBP) plasticizers.
Standard vs. Optimal Reference Rangesug/g 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.
<10.0 ug/g Cr (mono-ethylhexyl phthalate)
General reference distribution across unselected commercial populations.
<3.0 ug/g Cr
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Acts as anti-androgens by downregulating StAR and CYP11A1 gene expression in Leydig cells, suppressing testosterone synthesis.
Differential Diagnosis
Elevated Levels (MEHP / MBP High)
- •Frequent exposure to soft PVC plastics, synthetic fragrances, cosmetics, and plastic packaging
- •High dietary processed food intake
Low Levels (MEHP / MBP Low)
- •Use of fragrance-free, phthalate-free personal care items
- •Unprocessed whole-food diet
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 MEHP / MBP
- Targeted organ system imaging or functional dynamic testing related to plasticizer anti-androgen exposure
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Urinary Phthalate Metabolites - The New England Journal of Medicine (2021). PMID: 34090124
- [2]MEHP / MBP Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35322901
Associated Longevity Guides & Clinical Calculators
Medicine 3.0Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Urinary Phthalate Metabolites (MEHP / MBP) into overall healthspan optimization.