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
Open calculatorHOMA-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
Open calculatorFree 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
Open calculatorIron Saturation %
Calculates transferrin saturation percentage. Screens for both iron deficiency and hemochromatosis iron overload.
Formula: (Serum Iron ÷ TIBC) × 100Inputs: Serum Iron, TIBC
Open calculatorNon-HDL Cholesterol
Better cardiovascular risk predictor than LDL alone. Includes VLDL and other atherogenic particles.
Formula: Total Cholesterol − HDLInputs: Total Cholesterol, HDL
Open calculatorFor informational purposes only. Not medical advice. Always confirm results with your healthcare provider before making medical decisions.