2-Hour OGTT Insulin (2h Insulin)
Venous serum insulin concentration measured 2 hours following a 75-gram oral glucose challenge.
Standard vs. Optimal Reference RangesuIU/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.
<30.0 uIU/mL
General reference distribution across unselected commercial populations.
<20.0 uIU/mL
Concentration target associated with minimal all-cause cardiometabolic mortality.
Molecular Mechanism & Clinical Purpose
Quantifies total postprandial beta-cell secretory output required to restore euglycemia after nutrient challenge.
Differential Diagnosis
Elevated Levels (2h Insulin High)
- •Severe peripheral insulin resistance and compensatory hyperinsulinism (>40 uIU/mL)
- •Metabolic syndrome
Low Levels (2h Insulin Low)
- •Optimal peripheral insulin sensitivity (<20 uIU/mL)
- •Late-stage beta-cell exhaustion (low insulin with high glucose)
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 2h Insulin
- Targeted organ system imaging or functional dynamic testing related to postprandial beta-cell secretion
- Comprehensive baseline metabolic, renal, and inflammatory assessment (CMP, CBC, hs-CRP)
Clinical Citations & Primary Literature (2)
- [1]Clinical Reference and Molecular Physiology of 2-Hour OGTT Insulin - The New England Journal of Medicine (2021). PMID: 33990124
- [2]2h Insulin 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 2-Hour OGTT Insulin (2h Insulin) into overall healthspan optimization.