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Lab Calculators

Calculate derived values from your lab results. All calculators are free — no login required.

Corrected Calcium

Adjusts serum calcium for low albumin levels. Important for hypoparathyroid patients, kidney disease, and calcium monitoring.

Formula: Ca + 0.8 × (4.0 − Albumin)Inputs: Calcium, Albumin
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HOMA-IR (Insulin Resistance)

Estimates insulin resistance from fasting glucose and insulin. Key marker for metabolic health and diabetes prevention.

Formula: (Glucose × Insulin) ÷ 405Inputs: Fasting Glucose, Fasting Insulin
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Free Testosterone

Estimates free testosterone using the Vermeulen method. Essential for BHRT/TRT patients and hormone therapy monitoring.

Formula: Vermeulen equationInputs: Total T, SHBG (optional), Albumin
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Iron Saturation %

Calculates transferrin saturation percentage. Screens for both iron deficiency and hemochromatosis iron overload.

Formula: (Serum Iron ÷ TIBC) × 100Inputs: Serum Iron, TIBC
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Non-HDL Cholesterol

Better cardiovascular risk predictor than LDL alone. Includes VLDL and other atherogenic particles.

Formula: Total Cholesterol − HDLInputs: Total Cholesterol, HDL
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For informational purposes only. Not medical advice. Always confirm results with your healthcare provider before making medical decisions.
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