LDL Cholesterol, Direct
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About LDL Cholesterol, Direct
The amount of cholesterol found in low-density lipoproteins (LDL) in a blood sample is measured using direct LDL cholesterol test. LDL cholesterol can accumulate in blood vessels such as arteries and raise the risk of stroke, heart disease, and heart attack. It is known as a type of "bad" cholesterol.
A waxy substance called cholesterol plays a role in several critical cellular processes, including the production of cell membranes and the production of steroid hormones. Lipoproteins are fatty and protein-based particles that transport cholesterol in the blood. Even though cholesterol is essential for healthy cell function, having too much of it can be harmful to your health.
Thus, getting your direct LDL cholesterol test done can help in the early detection of cardiovascular disease risk and can also be used for cholesterol monitoring and diagnosing various health conditions.
This test is also known as DLDL, LDL D, Direct LDL-C, Direct LDL, Direct Low-Density Lipoprotein Cholesterol Test and Measured LDL Cholesterol Test.
Symptoms of high cholesterol
Although high cholesterol usually has no symptoms, it can result in heart attack and stroke if left untreated.
However, in the case of familial hypercholesterolemia condition you may experience the following symptoms of high cholesterol:
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Swellings on the knuckles, knees, or at the back of the ankle
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Small, yellow cholesterol lumps near the corner of the eyes
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Pale white ring around the iris
Who should get tested?
LDL cholesterol, direct test is recommended to be performed frequently in adults who have risk factors for high triglycerides. Examples of risk factors include:
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If you are over 60 years of age
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High cholesterol on a prior test
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Past history of heart disease
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Family history of heart disease or of high cholesterol
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Being overweight
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Smoking cigarettes
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Alcohol consumption
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Having high blood pressure (hypertension)
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Having type 2 diabetes
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Eating an unhealthy diet
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Leading an inactive lifestyle
Preparation for the test
No special preparation is required for an LDL cholesterol, direct test but if other tests like a cholesterol panel is ordered along with this test, then it is important to fast for 9 to 12 hours prior to sample collection.
Interpretation of Results
The units of measurement for the results are Milligrams per decilitre (mg/dL)
| Remarks | LDL cholesterol (mg/dL) in adults |
|---|---|
| Optimal | <100 |
| Above Optimal | 100-129 |
| Borderline High | 130-159 |
| High | 160-189 |
| Very High | >=190 |
Deviation from normal levels indicates the following:
The optimal level of LDL cholesterol depends on your risk factors. Generally, LDL cholesterol level of 100 mg/dL or lower is considered to be optimal.
Having higher-than-normal levels of LDL cholesterol can increase your risk of cardiovascular diseases such as:
- Atherosclerosis
- Heart attack
- Stroke
- Peripheral arterial disease
Very high LDL-C levels may be caused due to a genetic condition known as familial hypercholesterolemia.
Having abnormally low LDL cholesterol level is rare. This condition typically indicates an issue with the processing of the vitamins A, D, E, and K.
FAQs on LDL Cholesterol, Direct
A blood sample is taken from a vein in the arm using a fine needle. This procedure typically takes no longer than five minutes.
LDL cholesterol test result is usually available within 24 hours, although it could take longer at times.
This test involves negligible risk of infection. There might be slight bruising or tenderness around the site where the needle is inserted.
The results of an LDL cholesterol, direct test may be impacted by factors such as use of contraceptives, alcohol consumption, and smoking. Additionally, stress and particular medical conditions like Waldenstrom’s macroglobulinemia can also affect the accuracy of the test results.
LDL Cholesterol, Direct
