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HS-CRP / HDL Ratio Blood Test: What Low, High and Optimal HS-CRP / HDL Ratio Levels Mean.

The HS-CRP (High-Sensitivity C-Reactive Protein) to HDL (High-Density Lipoprotein) Ratio is a key biomarker that reflects an individual's cardiovascular health and overall inflammation levels. A higher ratio may indicate an increased inflammatory response, which can impact long-term wellness by affecting metabolism, energy levels, and longevity. By monitoring this ratio in Australian units (mg/L for HS-CRP and mmol/L for HDL), you can gain valuable insights into your body's inflammatory state and lipid profile, enabling you to make informed lifestyle adjustments. Tracking this biomarker empowers you to proactively optimise your wellbeing.

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Dr Michelle Woolhouse
July 1, 2026
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What is HS-CRP / HDL Ratio?

The HS-CRP / HDL ratio is the relationship between high-sensitivity C-reactive protein (HS-CRP), an indicator of inflammation, and HDL, the “good” cholesterol that helps remove fat from the bloodstream. This ratio provides a snapshot of inflammation levels relative to cholesterol health.

Why does it matter for long-term health and wellbeing?

The HS-CRP / HDL ratio is a useful indicator of inflammation and heart health, with a lower ratio reflecting better balance between inflammation and cardiovascular health. Tracking this ratio helps optimise overall wellness, energy, and metabolism over time.

What's an optimal level of HS-CRP / HDL Ratio?

Optimal Range:

  • HS-CRP: Less than 1 mg/L for low inflammation
  • HDL: Above 1.0 mmol/L for men and 1.3 mmol/L for women (An optimal ratio would show low CRP levels and high HDL, suggesting a healthier balance).

What influences HS-CRP / HDL levels?

Factors such as diet, physical activity, weight, and stress levels can impact these biomarkers. Regular exercise, a healthy diet, and stress management can support optimal levels.

What does it mean if HS-CRP / HDL is outside the optimal range?

A higher HS-CRP and a lower HDL may signal increased inflammation or suboptimal cardiovascular health, indicating areas where lifestyle improvements could be beneficial.

How can I support healthy HS-CRP / HDL levels?

To maintain healthy levels, focus on a balanced diet rich in antioxidants, omega-3 fatty acids, and healthy fats, regular physical activity, weight management, and stress reduction techniques like mindfulness or relaxation exercises.

References

  1. Silventoinen, K., Sammalisto, S., Perola, M., et al. (2003). Heritability of adult body height: a comparative study of twin cohorts in eight countries. Twin Research, 6(5), 399-408.
  2. Perkins, J.M., Subramanian, S.V., Davey Smith, G., & Özaltin, E. (2016). Adult height, nutrition, and population health. Nutrition Reviews, 74(3), 149-165.
  3. Silventoinen, K., Kaprio, J., Lahelma, E., et al. (2016). Genetic and environmental influences on height from infancy to early adulthood: An individual-based pooled analysis of 45 twin cohorts. Scientific Reports, 6, 28496.
HS-CRP / HDL Ratio

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