Interpret Your HDL Cholesterol Results
Enter your HDL-C value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.
Medical Disclaimer
This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.
Always consult a qualified healthcare professional before making any health decisions. Read full disclaimer →
HDL Cholesterol Normal Ranges
HDL (high-density lipoprotein) cholesterol transports excess cholesterol from peripheral tissues back to the liver for excretion (reverse cholesterol transport).
| Age Group | Sex | Reference Range | Unit | Notes |
|---|---|---|---|---|
| Adults (18–64) | Male | 40 – 60 | mg/dL | >60 is cardioprotective |
| Adults (18–64) | Female | 50 – 60 | mg/dL | >60 is cardioprotective |
Also reported in: mmol/L.
Why Doctors Order the HDL Cholesterol Test
Low HDL-C (below 40 mg/dL in men, below 50 mg/dL in women) is an independent risk factor for coronary heart disease, included in the ATP/NCEP cardiovascular risk assessment. Unlike LDL-C, raising HDL pharmacologically has not consistently reduced cardiovascular events in trials (CETP inhibitors).
How to Enter Your HDL-C Result
HDL Cholesterol can be reported in mg/dL or mmol/L. Choose the unit printed next to your result on the lab report so it is compared with the matching reference range.
Reference ranges for HDL-C differ between men and women, so entering your sex gives a more accurate reading.
What a Low or High HDL-C Can Be Associated With
Below the reference range
- Sedentary lifestyle
- Obesity
- Type 2 diabetes and insulin resistance
- Smoking
- Hypertriglyceridemia
Above the reference range
- Regular aerobic exercise
- Moderate alcohol consumption
- Genetics (familial hyperalphalipoproteinemia)
- Estrogen therapy
- Fibrate medications
These are common associations, not a diagnosis. A single result is read alongside your symptoms, history and other tests — discuss it with your doctor.
What Can Change Your HDL-C Result
Before you read too much into a result, consider whether any of these applied:
- Acute illness (HDL drops significantly during acute phase response)
- Recent vigorous exercise (can transiently raise HDL)
- Medications: beta-blockers, thiazides, progestins lower HDL; fibrates, niacin, statins raise HDL modestly
Preparing for the test: Fasting for 9–12 hours preferred. Avoid heavy alcohol use 24 hours before testing.
Symptoms That Often Prompt HDL-C Testing
- No direct symptoms from low HDL
- Increased risk of premature coronary artery disease
Want the full clinical guide to HDL Cholesterol?
Reference ranges, causes, symptoms, preparation, and FAQs.