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Cholesterol Conversion Formula:
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Cholesterol levels are measured in different units around the world. The conversion between mg/dL (milligrams per deciliter) and mmol/L (millimoles per liter) is essential for healthcare professionals and patients to understand cholesterol values across different measurement systems.
The conversion formula is:
Where:
Explanation: The conversion factor 38.67 is derived from the molecular weight of cholesterol and the relationship between milligrams and millimoles.
Details: Accurate cholesterol measurement and unit conversion are crucial for assessing cardiovascular risk, diagnosing lipid disorders, and monitoring treatment effectiveness across different healthcare systems.
Tips: Enter cholesterol level in mg/dL. The value must be greater than 0. The calculator will automatically convert to mmol/L using the standard conversion factor.
Q1: Why are there different units for cholesterol measurement?
A: Different countries use different measurement systems. The US typically uses mg/dL, while most other countries use mmol/L.
Q2: Is the conversion factor the same for all cholesterol fractions?
A: The conversion factor 38.67 is specific for total cholesterol. LDL and HDL cholesterol have slightly different conversion factors.
Q3: What are normal cholesterol levels?
A: Normal total cholesterol is generally <200 mg/dL (5.2 mmol/L). Values between 200-239 mg/dL (5.2-6.2 mmol/L) are borderline high, and ≥240 mg/dL (≥6.2 mmol/L) is high.
Q4: How often should cholesterol be checked?
A: Adults should have cholesterol checked every 4-6 years. Those with risk factors may need more frequent testing.
Q5: Are there limitations to unit conversion?
A: While the conversion is mathematically precise, clinical interpretation should consider individual patient factors and local guidelines.