Cholesterol Formula:
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The basic formula for calculating total cholesterol is: TC = HDL + LDL + (TG / 5). This equation estimates total cholesterol levels from measured HDL, LDL, and triglyceride values.
The calculator uses the cholesterol formula:
Where:
Explanation: This formula provides an estimate of total cholesterol by summing HDL, LDL, and one-fifth of triglyceride values.
Details: Calculating total cholesterol is important for assessing cardiovascular health risk and monitoring lipid profile status.
Tips: Enter HDL, LDL, and triglyceride values in mg/dL. All values must be valid (≥0).
Q1: Why divide triglycerides by 5 in the formula?
A: This accounts for the fact that very low-density lipoproteins (VLDL) carry about one-fifth of their weight as cholesterol.
Q2: What are normal cholesterol values?
A: Desirable total cholesterol is below 200 mg/dL, with HDL >40 mg/dL (men) or >50 mg/dL (women), and LDL <100 mg/dL.
Q3: When should cholesterol be measured?
A: Fasting for 9-12 hours before testing provides the most accurate results, especially for triglyceride measurements.
Q4: Are there limitations to this calculation?
A: This is an estimation. Direct measurement of total cholesterol may be more accurate in certain clinical situations.
Q5: Should this formula be used for treatment decisions?
A: While useful for estimation, clinical decisions should be based on comprehensive lipid panel results and professional medical advice.