1. What is the Canadian Cholesterol Calculation?

The Canadian cholesterol calculation method estimates total cholesterol (TC) from HDL, LDL, and triglyceride values using the formula: TC = HDL + LDL + (TG / 2.2). This method is widely used in Canadian healthcare settings for lipid profile assessment.

2. How Does the Calculator Work?

The calculator uses the Canadian cholesterol equation:

Where:

• \( TC \) — Total Cholesterol (mmol/L)
• \( HDL \) — HDL Cholesterol (mmol/L)
• \( LDL \) — LDL Cholesterol (mmol/L)
• \( TG \) — Triglycerides (mmol/L)

Explanation: This equation converts triglycerides to cholesterol equivalents using the factor 2.2 and sums all cholesterol components to estimate total cholesterol.

3. Importance of Cholesterol Calculation

Details: Accurate cholesterol assessment is crucial for cardiovascular risk assessment, treatment decisions, and monitoring lipid-lowering therapy effectiveness.

4. Using the Calculator

Tips: Enter HDL, LDL, and triglyceride values in mmol/L. All values must be valid (non-negative numbers). Use laboratory-measured values for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: Why is the factor 2.2 used for triglycerides?
A: The factor 2.2 converts triglyceride mass to cholesterol equivalent, based on the molecular weight ratio of triglycerides to cholesterol.

Q2: What are normal cholesterol values in Canada?
A: Generally, TC < 5.2 mmol/L is desirable, 5.2-6.2 is borderline high, and >6.2 is high. However, individual targets may vary based on risk factors.

Q3: When should cholesterol be measured?
A: Fasting samples (9-12 hours) are preferred, especially for accurate triglyceride measurement. Non-fasting samples can be used for total and HDL cholesterol.

Q4: Are there limitations to this calculation?
A: This method assumes standard conversion factors and may be less accurate with very high triglyceride levels (>4.5 mmol/L).

Q5: Should this replace direct LDL measurement?
A: No, direct LDL measurement is preferred when triglycerides are elevated (>4.5 mmol/L) or for precise cardiovascular risk assessment.