Dr. Jockers Functional Nutrition

Top 5 Lab Tests For Heart, Brain, Fat Burning and Longevity

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Jan 15, 2026
Discover the five essential lab tests that reveal insights into heart, brain, and metabolic health. Learn how fasting insulin levels can indicate your body’s fuel efficiency, while hemoglobin A1C measurements help assess blood sugar regulation. Delve into the triglyceride to HDL ratio for a clear picture of metabolic wellness. Understand how homocysteine and C-reactive protein levels connect to inflammation and chronic diseases. Dr. Jockers shares practical diet and lifestyle tips for optimizing these crucial markers.
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ADVICE

Check Fasting Insulin Regularly

  • Do test fasting insulin after a 12–14 hour fast to assess metabolic health.
  • Keep fasting insulin under 6 µIU/mL to avoid insulin resistance and blocked fat burning.
ADVICE

Use A1c To Gauge Long-Term Blood Sugar

  • Do measure hemoglobin A1c to capture 90–120 day blood sugar exposure.
  • Aim for A1c under 5.5%, ideally 4.5–5.2% to indicate strong metabolic health.
ADVICE

Track Triglyceride-to-HDL Ratio

  • Do calculate your triglyceride-to-HDL ratio as a metabolic marker.
  • Keep the ratio <2 and ideally close to 1; triglycerides should be under 100 mg/dL.
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