Plasma Oxytocin (OXT)
Nonapeptide synthesized in hypothalamic paraventricular and supraoptic nuclei, secreted into circulation by posterior pituitary.
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.
1.0 - 10.0 pg/mL
General reference distribution across unselected commercial populations.
3.0 - 8.0 pg/mL
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Binds oxytocin GPCRs (OXTR), elevating intracellular calcium to drive uterine contraction, lactation, social bonding, and skeletal muscle stem cell rejuvenation.
Differential Diagnosis
Elevated Levels (OXT High)
- •High social intimacy / skin-to-skin touch
- •Parturition and lactation surge
Low Levels (OXT Low)
- •Social isolation and chronic allostatic stress
- •Impaired muscle stem cell regenerative capacity
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 OXT
- Targeted organ system imaging or functional dynamic testing related to social attachment & anabolic regeneration
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of Plasma Oxytocin - The New England Journal of Medicine (2021). PMID: 33990124
- [2]OXT Dynamics in Human Longevity and Precision Medicine - The Lancet (2022). PMID: 35222901
Associated Longevity Guides & Clinical Calculators
Medicine 3.0Explore comprehensive evidence-based clinical protocols, testing costs, and algorithmic calculators that incorporate Plasma Oxytocin (OXT) into overall healthspan optimization.