HDL Cholesterol

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This test measures the amount of HDL-C, commonly known as "good cholesterol" in your blood. HDL-C helps remove excess cholesterol from your arteries, which can reduce your risk of heart disease and stroke. The test involves taking a blood sample, which is then analyzed to determine your HDL-C levels. The results of the test can help you and your healthcare provider make informed decisions about managing your cardiovascular health.

Awaiting result:

One day

Collect material:

Blood

Prepare:

Learn more

Purpose of the test

The HDL-C test is an important tool for assessing cardiovascular health. The test measures the amount of HDL-C in your blood, a type of cholesterol that helps remove excess cholesterol from your arteries. Some of the goals of an HDL-C test include

- Assess your risk for heart disease and stroke: High levels of HDL-C are associated with a lower risk of heart disease and stroke, while low levels are associated with a higher risk.

- To monitor the effectiveness of lifestyle changes or medications: If you have been diagnosed with high cholesterol or other cardiovascular risk factors, your healthcare provider may recommend lifestyle changes or medications to help manage your condition. Regular HDL-C testing can help monitor the effectiveness of these interventions.

- Identify underlying health conditions: Low levels of HDL-C can be caused by underlying health conditions such as diabetes, hypothyroidism, and liver disease. An HDL-C test can help identify these conditions so they can be properly treated.

Early detection is key to managing cardiovascular health. By taking an HDL-C test, you can identify potential problems early and take steps to reduce your risk of heart disease and stroke. On the other hand, not taking the test could lead to undiagnosed health conditions that could have serious consequences down the road. It's important to work with your healthcare provider to determine if an HDL-C test is right for you based on your individual health history and risk factors.

Who Should Get Tested

HDL-C testing is recommended for people who are at risk of developing cardiovascular disease or who have been diagnosed with the disease. The following are some of the groups of people who may benefit from HDL-C testing

- People with a family history of heart disease: If you have a family history of heart disease, you may be at increased risk and should consider getting an HDL-C test.

- People with high blood pressure: High blood pressure is a major risk factor for heart disease and stroke. If you have high blood pressure, your healthcare provider may recommend an HDL-C test to assess your overall cardiovascular health.

- People with diabetes: Diabetes is associated with an increased risk for heart disease and stroke. Regular HDL-C testing can help monitor your cardiovascular health and detect potential problems early.

- People with high cholesterol: High levels of LDL cholesterol (often called "bad" cholesterol) are associated with an increased risk of heart disease and stroke. An HDL-C test can help determine if you have low levels of "good" cholesterol, which can also increase your risk.

- People who smoke: Smoking is a major risk factor for heart disease and stroke. If you smoke, your healthcare provider may recommend an HDL-C test to help assess your overall cardiovascular health.

It's important to work with your healthcare provider to determine if an HDL-C test is right for you based on your individual health history and risk factors. By identifying potential problems early, you can take steps to reduce your risk of developing cardiovascular disease and improve your overall health.

Blood Test Preparation Guidelines

Time of day

It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.

Fasting

It is recommended to fast for approximately 12 hours before blood sampling. The last meal of the previous day should ideally be consumed around 6:00 p.m. On the day before the test, avoid heavy and fatty meals as well as alcohol.

Stay hydrated

Drinking water prior to testing can help with sample collection.

Other factors

Tests should not be performed after a sleepless night or intense physical activity. It is recommended to avoid exercise and stress immediately before blood collection and to not smoke. A short rest is recommended.

Medications and supplements:

Blood samples should be collected before the morning dose. Some drugs can interfere with test results. Consult with your doctor whether you can delay your dose because of lab tests.

Biotin supplements:

High doses of biotin supplements can affect test results, causing false elevation or reduction. It's recommended to avoid taking biotin for at least 72 hours before blood collection. If you are taking biotin, inform the personnel collecting the blood so that they can provide specific instructions.

Interpreting Test Results

HDL-C test results are usually reported in milligrams per deciliter of blood (mg/dL). Here are some general guidelines for interpreting HDL-C test results:

- Normal or desirable HDL-C levels: 60 mg/dL or higher
- Borderline low HDL-C levels: 40-59 mg/dL
- Low HDL-C levels: less than 40 mg/dL

It's important to note that reference ranges for normal or desirable HDL-C levels may vary depending on your age, gender and other factors. Your healthcare provider will interpret your test results based on your individual health history and risk factors. If your HDL-C level is low, your healthcare provider may recommend lifestyle changes or medications to help control your cholesterol and reduce your risk of heart disease and stroke.

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