What a lipid profile measures
A lipid profile is a blood test that measures fats, or lipids, in your blood. The main values are total cholesterol, LDL cholesterol, HDL cholesterol and triglycerides. Many reports also show VLDL, non-HDL cholesterol and ratios such as total cholesterol to HDL. Cholesterol is needed by the body to build cells and hormones, but too much of certain types can build up in the walls of blood vessels and narrow them over time.
Why doctors order it
High cholesterol usually causes no symptoms, so testing is the only way to know. Doctors order a lipid profile to assess the risk of heart attack and stroke, as part of routine check-ups, and in people with diabetes, high blood pressure, kidney disease, obesity, smoking, or a family history of early heart disease. Heart disease tends to affect Indians at a younger age, so doctors often check lipids earlier. It is also used to monitor people on cholesterol-lowering medicines.
How to prepare
Many labs ask you to fast for about 9 to 12 hours before a lipid profile, drinking only water, because triglycerides rise after meals. Some guidelines now accept non-fasting samples for routine screening, so follow the instructions given by your doctor or lab. Avoid alcohol and very heavy, fatty meals the day before. Continue your regular medicines unless told otherwise, and mention recent illness, as it can temporarily change results.
LDL and total cholesterol
LDL is often called 'bad' cholesterol because it is the main type that builds up in artery walls. In general terms, an LDL below 100 mg/dL is often considered optimal for people without heart disease, but people with diabetes, heart disease or a previous stroke usually need much lower targets set by their doctor.
A total cholesterol below 200 mg/dL is commonly described as desirable. Total cholesterol includes both harmful and protective types, so doctors look at LDL, HDL and non-HDL cholesterol rather than the total alone. Non-HDL cholesterol, which is total cholesterol minus HDL, is increasingly used because it includes all the harmful types together.
HDL and triglycerides
HDL is often called 'good' cholesterol because it helps carry cholesterol away from the arteries. Low HDL, commonly taken as below 40 mg/dL in men and below 50 mg/dL in women, is linked with higher heart risk. Low HDL and high triglycerides are a frequent pattern in Indians, often linked with belly fat, inactivity and diets high in refined carbohydrates.
Triglycerides below 150 mg/dL are generally considered normal. Levels rise with excess sugar, refined carbohydrates, alcohol, obesity and uncontrolled diabetes. Very high triglycerides can inflame the pancreas and need prompt medical attention. Remember that each lab prints its own reference ranges.
Your overall risk matters most
The same cholesterol number can mean different things for different people. Doctors combine your lipid values with age, sex, blood pressure, blood sugar, smoking, kidney function and family history to estimate your overall risk of heart attack and stroke, and then decide on targets and treatment. Cholesterol-lowering medicines such as statins should be taken only on a doctor's prescription, and never stopped on your own without discussing it with your doctor.
Improving your numbers
Healthy habits improve lipid levels and protect the heart even when medicines are needed. Small, steady changes are easier to maintain than strict diets, and the whole family often benefits when cooking habits change at home. Triglycerides in particular respond well to cutting down sugar, refined carbohydrates and alcohol.
- Use less ghee, vanaspati, butter and deep-fried foods
- Reduce sweets, sugary drinks, maida and large portions of white rice
- Eat more vegetables, fruits, whole grains, dals, sprouts and nuts in moderation
- Aim for regular physical activity such as brisk walking most days
- Stop smoking and limit alcohol
- Keep diabetes, blood pressure and weight under control
When to repeat the test
If your lipid profile is normal and your risk is low, doctors often repeat it every few years. People with diabetes, heart disease, high blood pressure or abnormal results are usually tested more often. After starting or changing a cholesterol medicine, your doctor may repeat the test within a few months to check the response, and then periodically. Children with a strong family history of high cholesterol may also need testing. Consult your doctor to understand your report and plan the next test.
See a doctor urgently if
- Chest pain, pressure or tightness, especially with sweating or breathlessness
- Sudden weakness or numbness of the face, arm or leg, or difficulty speaking
- Severe upper abdominal pain spreading to the back, with vomiting
- Yellowish deposits on the eyelids or skin, or a family history of heart attacks at a young age
Tests that may help
This article is general health information, not medical advice. Do not start, stop or combine medicines on your own — always follow your doctor's prescription and ask your pharmacist if unsure.