LDL Cholesterol Blood Test: Understanding Your Bad Cholesterol Levels
Low-density lipoprotein (LDL) cholesterol is a lipoprotein containing Apolipoprotein B that carries cholesterol through the blood. When LDL levels are too high, cholesterol-laden particles can become trapped in artery walls, driving atherosclerosis and increasing the risk of heart attack and stroke. Wellth offers LDL cholesterol testing through accredited Swedish laboratories, typically as part of a comprehensive lipid panel that provides a complete view of your cardiovascular risk.
Why Test LDL Cholesterol?
LDL cholesterol testing is fundamental for evaluating and managing cardiovascular risk. Both genetic studies and large clinical trials consistently show that lower LDL particle concentrations reduce heart disease risk. Testing is recommended for routine health screening, for people with a family history of cardiovascular disease, and for monitoring the effectiveness of dietary changes, lifestyle modifications, or lipid-lowering medications.
What Do High LDL Cholesterol Levels Mean?
High LDL cholesterol means there are more atherogenic particles available to become trapped in artery walls, accelerating plaque formation and increasing the risk of heart attack and stroke. Causes include genetic factors such as familial hypercholesterolaemia, a diet high in saturated fats and trans fats, low fibre intake, smoking, hypothyroidism, and insulin resistance. The more Apolipoprotein B-containing particles circulating in your blood, the higher your cardiovascular risk.
What Do Low LDL Cholesterol Levels Mean?
Low LDL cholesterol is generally associated with lower cardiovascular risk. However, very low levels may indicate oxidative stress, malnutrition, hyperthyroidism, autoimmune conditions, or liver dysfunction. In pregnancy, low LDL may increase the risk of premature birth. If your LDL is significantly below normal, your doctor may investigate underlying causes.
Symptoms to Watch For
- High LDL is typically a silent condition without direct symptoms
- Chest pain (angina) when arteries narrow significantly
- Shortness of breath
- Fatty deposits under the skin (xanthomas)
- Heart attack or stroke in advanced cases
Who Should Get Tested?
- All adults as part of routine cardiovascular screening
- Anyone with a family history of high cholesterol or heart disease
- People with diabetes, hypertension, or obesity
- Smokers and those with sedentary lifestyles
- Patients on statins or other lipid-lowering therapy
How to Prepare for Your Test
Do not eat or drink anything except water for at least 10 hours (preferably 12) before the test. Postpone the test if you are ill and wait at least 6 weeks after illness. This test is best done in the early morning after an overnight fast. Bring valid identification.
Order Your Blood Test
Test your LDL Cholesterol levels with an accredited Swedish laboratory. Results within days, reviewed by Wellth.
Frequently Asked Questions
What is a normal LDL cholesterol level?
Why is LDL called the bad cholesterol?
How can I lower my LDL cholesterol?
Do I need to fast before an LDL test?
Reviewed by
Wellth Team
Wellth
Our content is written and reviewed by Wellth, and fact-checked against peer-reviewed research and current Swedish clinical guidelines.
Learn more about our team →Medical Disclaimer
The information on this page is provided for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Wellth provides health information and testing services but is not a substitute for clinical care. Always consult a qualified healthcare provider if you have questions about a medical condition. If you are experiencing severe or urgent symptoms, contact your doctor or call 1177 Vårdguiden. Blood test results should be interpreted by a qualified healthcare professional in the context of your complete medical history.