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Atherogenic Index of Plasma (AIP) Calculator

Assess cardiovascular risk through LDL particle size estimation — a logarithmic transformation of your TG/HDL ratio

Metabolic Relevance
AIP = log₁₀(Triglycerides/HDL-C) correlates strongly with LDL particle size (r = 0.803). A negative AIP indicates HDL exceeds triglycerides — representing excellent cardiovascular protection. Dobiásová validation studies established AIP as a powerful predictor of atherosclerosis risk.

Recommended testing frequency:
Every 3-6 months with lipid panels, especially when monitoring metabolic interventions

Did you know?

AIP can be negative! When HDL exceeds triglycerides, the logarithm becomes negative — indicating large buoyant LDL particles and excellent cardiovascular protection. Athletes and low-carb dieters often achieve negative AIP values.

AIP responds faster to dietary changes than LDL-C. Carbohydrate reduction can dramatically lower triglycerides within 2-4 weeks, rapidly improving your AIP score.

Want to understand your result better?

Learn about interpretation, what affects your score, and evidence-based strategies to improve it.

Read the full guide

Evidence-Based

This calculator is based on peer-reviewed research validated across thousands of clinical studies.

View scientific references(4)

Medical Disclaimer

This calculator is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider with any questions you may have regarding your health.

Why Optimal Thresholds Differ?

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Standard Medical

Dobiásová validation studies (AIP < 0.11 low risk)

⚠️ Population-level cardiovascular risk stratification

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Research Consensus

Cardiovascular prevention (AIP < 0.00)

Negative AIP = HDL exceeds TG, optimal protection

Metabolic Optimization

Low-carb/keto expected (AIP < -0.10)

🔬 Excellent TG reduction with carbohydrate restriction