Plasma UCH-L1 (UCH-L1)
Deubiquitinating cysteine protease abundantly expressed in the neuronal perikaryon (soma), comprising 1% to 2% of total brain soluble protein.
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.
<300 pg/mL (baseline), acute surge in TBI
General reference distribution across unselected commercial populations.
<100 pg/mL
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Removes ubiquitin from damaged proteins to maintain proteostasis; released massively into blood within 1 hour of neuronal membrane rupture.
Differential Diagnosis
Elevated Levels (UCH-L1 High)
- •Acute Traumatic Brain Injury (concussion, contusion, diffuse axonal injury)
- •Severe ischemic stroke with neuronal necrosis
Low Levels (UCH-L1 Low)
- •Intact neuronal somatic cell membranes
- •Absence of acute intracranial lesion
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 UCH-L1
- Targeted organ system imaging or functional dynamic testing related to neuronal somatic cytoplasm injury
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Plasma UCH-L1 - The New England Journal of Medicine (2021). PMID: 34190124
- [2]UCH-L1 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 Plasma UCH-L1 (UCH-L1) into overall healthspan optimization.