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About the test
What is this test done for?
A LDL direct test is a test to determine levels of low density lipids in blood in people who are at risk of developing heart disease.
Why is it Done?
It is performed to determine risk of heart disease, to monitor effectiveness of lipid lowering lifestyle changes and drug therapies.
When should it be performed?
The following signs and symptoms give the indication to perform the test:
  • Triglycerides are high
  • Cigarette smoking
  • Being overweight, obese
  • Unhealthy diet
  • Sedentary lifestyle
  • 45 years or older men, 55 years or older women
  • Hypertension
  • Family history of premature heart disease.
  • Diabetes or pre diabetes.
How is it done
A blood sample will be collected from a vein in your arm. 12 hours fasting is necessary prior to blood collection.
Levels are as follows-
  • Less than 100 mg/dL— Optimal
  • 100-129 mg/dL— Near optimal, above optimal
  • 130-159 mg/dL— Borderline high
  • 160-189 mg/dL— High
  • Greater than 189 mg/dL — Very high
  • The target values based on risk factors are:
    • LDL-C less than 100 mg/dL with heart disease or diabetes
    • LDL-C less than 130 mg/dL with 2 or more risk factors which is intermediate risk for heart disease
    • LDL-C less than 160 mg/dL with 0 or 1 risk factor indicates low risk for heart disease
Other Tests
Lipid profile, triglycerides are the tests in conjunction with the cholesterol LDL direct.
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