A patient's total cholesterol-to-HDL cholesterol ratio can be used to assess the patient's risk of coronary artery disease as compared to that of "Average Americans."
total cholesterol-to-HDL cholesterol ratio =
= (total cholesterol) / (HDL cholesterol)
where:
• Both cholesterol values are expressed as mg/dL or mmol/L.
Male
Female
Risk of Coronary Artery Disease
3.4 - 4.9
3.3 - 4.3
50% of average
5.0 - 9.5
4.4 - 6.9
average
9.6 - 23.3
7.0 - 10.9
2 times average
> 23.3
> 10.8
3 times average
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