LDL (low-density lipoprotein) is called 'bad' cholesterol because it carries cholesterol into artery walls, where it forms plaque.
- Normal range (adults)
- Below 100 mg/dL (below 2.59 mmol/L)
- Sample
- Blood
- Fasting
- Usually not required; some labs ask for a 9–12 hour fast.
- Also called
- LDL Cholesterol, Serum LDL cholesterol level, LDL, Low Density Lipoprotein, LDL-C, Bad Cholesterol, Serum LDL
LDL Cholesterol normal range
| Group | mg/dLConventional units: US, South Asia | mmol/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Adults | Below 100 | Below 2.59 |
People with diabetes or heart disease are usually given a lower target by their doctor.
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the LDL Cholesterol test done?
LDL is the main target for treatment when doctors try to lower the risk of heart attack and stroke.
What does a high LDL Cholesterol level mean?
High LDL speeds up plaque build-up in arteries. The higher it is and the longer it stays high, the greater the risk. People with diabetes or heart disease are given lower targets.
Common causes
- Saturated and trans fats in the diet
- Inherited high cholesterol
- Overweight and inactivity
- Underactive thyroid
- Diabetes and kidney disease
- Some medicines, such as steroids
Diet and lifestyle tips
- Replace ghee, butter, coconut and palm oil with olive or canola oil
- Eat soluble fibre every day: oats, barley, beans, lentils, okra, apples, psyllium
- Add nuts, seeds and plant sterol-fortified foods
- Limit red and processed meat, full-fat dairy, fried and bakery food
- Be active for at least 30 minutes most days
- Statins or other medicines may be needed; your doctor decides based on your total risk
What does a low LDL Cholesterol level mean?
Low LDL is generally good for your heart. Very low levels are usually seen with cholesterol-lowering treatment.
Common causes
- Cholesterol-lowering medicines
- Overactive thyroid
- Malnutrition or liver disease
- Rare inherited conditions
Diet and lifestyle tips
- No changes needed if you are otherwise well
- Ensure a balanced diet
When should you see a doctor?
Discuss your LDL with your doctor in the context of your total heart risk. An LDL above 190 mg/dL (4.9 mmol/L) usually needs treatment and family screening.
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This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.