Total Cholesterol & Lipid Panel
A lipid panel (cholesterol test) measures four key fats (lipids) in your blood: total cholesterol, LDL (low-density lipoprotein — 'bad' cholesterol), HDL (high-density lipoprotein — 'good' cholesterol), and triglycerides. These values together provide a comprehensive picture of cardiovascular risk.
Normal Range
Total cholesterol < 200 mg/dL; LDL < 100 mg/dL (ideal); HDL > 60 mg/dL (protective); Triglycerides < 150 mg/dL
Reference ranges may vary slightly between laboratories. Always interpret your result in context with your doctor.
Why is Cholesterol measured?
Dyslipidaemia (abnormal lipid levels) is a major, modifiable risk factor for heart disease and stroke — the world's leading causes of death. Regular cholesterol screening allows early intervention through diet, exercise, or medication before arterial plaque builds up. Guidelines recommend testing every 4–6 years for healthy adults from age 20.
High Cholesterol means…
High total cholesterol (above 240 mg/dL) or high LDL (above 160 mg/dL) increases the risk of atherosclerosis — the build-up of fatty plaques in arteries — which can lead to heart attack and stroke. LDL is the primary therapeutic target in cardiovascular risk management.
Low Cholesterol means…
Low HDL (below 40 mg/dL in men, below 50 mg/dL in women) is an independent risk factor for heart disease even when LDL is normal. Very low LDL (below 40 mg/dL) is rare and may be associated with certain genetic disorders or malnutrition, though very low LDL achieved through statins is generally safe.
Symptoms associated with abnormal Cholesterol
When Cholesterol is high:
- Usually no symptoms until complications occur
- Xanthomas (fatty deposits under skin) in severe familial hypercholesterolaemia
- Arcus senilis (grey ring around the eye cornea)
- Chest pain or angina if artery disease is advanced
When Cholesterol is low:
- Very low HDL is asymptomatic but increases cardiovascular risk
- Extremely low total cholesterol may cause fatigue, anxiety, depression (rare)
How to improve your Cholesterol
- Replace saturated fats (red meat, butter, cheese) with unsaturated fats (olive oil, avocado, nuts) — this is the single most impactful dietary change for LDL.
- Soluble fibre (oats, barley, beans, apples) actively lowers LDL by binding cholesterol in the gut.
- 150 minutes of moderate aerobic exercise per week raises HDL by 3–6% and lowers triglycerides.
- Quit smoking — it directly lowers HDL and damages arterial walls.
- If prescribed a statin, take it consistently; stopping abruptly can increase cardiovascular event risk.
Frequently asked questions about Cholesterol
What are normal cholesterol levels by age?
For adults, total cholesterol below 200 mg/dL is desirable. LDL should ideally be below 100 mg/dL (or below 70 mg/dL for high cardiovascular risk patients). HDL above 60 mg/dL is protective. Reference ranges vary slightly by age and sex — post-menopausal women often see LDL rise, and men's HDL is naturally lower than women's.
What is the difference between LDL and HDL cholesterol?
LDL (low-density lipoprotein) carries cholesterol from the liver to tissues — excess LDL deposits in artery walls, causing plaques. HDL (high-density lipoprotein) carries cholesterol back to the liver for removal — high HDL is protective. The LDL:HDL ratio is a useful cardiovascular risk marker.
Can diet alone lower high cholesterol?
Diet and lifestyle changes can lower LDL by 15–30% in many people. A portfolio diet (plant sterols, soluble fibre, soy protein, nuts) combined with regular exercise can achieve results comparable to low-dose statin therapy. However, people with familial hypercholesterolaemia or very high cardiovascular risk usually need medication.
Do I need to fast before a cholesterol test?
A 9–12 hour fast is recommended for a complete lipid panel to get an accurate triglyceride reading. However, non-fasting total cholesterol and HDL are largely unaffected by recent meals, so non-fasting tests are increasingly accepted for cardiovascular risk screening.
Medical Sources
- ↗ ACC/AHA Guideline on Management of Blood Cholesterol
- ↗ NIH MedlinePlus — Cholesterol Levels
- ↗ WHO — Raised Cholesterol
This page is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider about your individual results.