Tumor Necrosis Factor-Alpha (TNF-alpha)
Potent homotrimeric pro-inflammatory cytokine produced by activated macrophages, regulating apoptosis and cachexia.
Standard vs. Optimal Reference Rangespg/mL
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.
<8.0 pg/mL
General reference distribution across unselected commercial populations.
<2.0 pg/mL
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Binds TNFR1 and TNFR2 receptors, activating NF-kB, MAPK, and caspase-8 pathways to trigger inflammation or apoptosis.
Differential Diagnosis
Elevated Levels (TNF-alpha High)
- •Autoimmune inflammatory diseases (RA, Crohn)
- •Chronic heart failure
- •Severe septic shock
- •Sarcopenic obesity
Low Levels (TNF-alpha Low)
- •Optimal immune balance
- •Targeted anti-TNF therapeutic response
Technical Reference & Deep Dive
Biochemistry & Enzymatic Pathways
Longevity Risk Architecture & Epidemiology
Pre-Analytical Caveats & Diagnostic Workup
Pre-Analytical Considerations:
Collect in standard collection tubes as specified by the laboratory protocol. Avoid hemolysis and process serum/plasma promptly within 2 hours. Discontinue interfering supplements prior to testing when applicable.
Reflexive Testing Protocol:
- Confirmatory testing and secondary biomarker panel evaluation for TNF-alpha
- Targeted imaging or functional organ assessment related to innate immune signaling
- Comprehensive metabolic and inflammatory baseline panel (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Physiological Dynamics of Tumor Necrosis Factor-Alpha - The New England Journal of Medicine (2021). PMID: 33890124
- [2]TNF-alpha in Human Longevity and Pathophysiological Risk Stratification - The Lancet (2022). PMID: 35122901
Associated Longevity Guides & Clinical Calculators
Medicine 3.0Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Tumor Necrosis Factor-Alpha (TNF-alpha) into overall healthspan optimization.