A normal total cholesterol level for adults is under 200 mg/dL, with an optimal LDL (“bad”) cholesterol under 100 mg/dL and an HDL (“good”) cholesterol of 60 mg/dL or higher. But your lipid panel includes several numbers, and each one tells a different part of the story. Here’s how to read all of them.
Total Cholesterol
Total cholesterol is the broadest measure on your lipid panel. It combines your LDL, HDL, and a portion of your triglycerides into a single number. Under 200 mg/dL is considered desirable for adults. Between 200 and 239 mg/dL is borderline high, and 240 mg/dL or above is high.
This number is useful as a quick snapshot, but it doesn’t tell the whole story. Someone with a total cholesterol of 210 could be in great shape if most of that comes from high HDL. That’s why the individual components matter more than the total alone.
LDL Cholesterol: The Number That Matters Most
LDL cholesterol is the type that builds up inside artery walls and drives heart disease risk. It gets the most attention from doctors, and for good reason. The standard categories for adults break down like this:
- Optimal: Less than 100 mg/dL
- Near optimal: 100 to 129 mg/dL
- Borderline high: 130 to 159 mg/dL
- High: 160 to 189 mg/dL
- Very high: 190 mg/dL and above
For most healthy adults with no history of heart problems, under 100 mg/dL is the goal. But if you already have heart disease, diabetes, or other significant risk factors, your target drops lower. The latest joint guidelines from the American Heart Association and American College of Cardiology, published in 2026, set specific goals based on risk: under 100 mg/dL for people without heart disease, under 70 mg/dL for those with additional risk factors like a family history of high cholesterol or calcium buildup in the arteries, and under 55 mg/dL for people who already have cardiovascular disease. Your doctor will use your full risk profile to determine which target applies to you.
HDL Cholesterol: Higher Is Better
HDL cholesterol works in the opposite direction from LDL. It carries excess cholesterol away from your arteries and back to the liver for disposal, which is why it’s called “good” cholesterol. Unlike other cholesterol numbers, you want this one to be high.
The minimum healthy level differs by sex. For men, HDL should not fall below 40 mg/dL. For women, the floor is 50 mg/dL. But those are minimums, not targets. The protective sweet spot is between 60 and 80 mg/dL. At that range, HDL actively lowers your heart disease risk rather than just staying out of the danger zone.
Regular aerobic exercise, maintaining a healthy weight, and not smoking are the most reliable ways to raise HDL. Moderate alcohol intake has a small positive effect, but the overall health tradeoffs make it a poor strategy on its own.
Triglycerides
Triglycerides aren’t technically cholesterol, but they show up on the same blood test and play an important role in heart health. They’re the most common type of fat in your blood, and your body converts excess calories (especially from sugar, refined carbs, and alcohol) into triglycerides for storage.
- Healthy: Less than 150 mg/dL
- Borderline high: 150 to 199 mg/dL
- High: 200 to 499 mg/dL
- Very high: 500 mg/dL and above
Triglycerides respond quickly to dietary changes. Cutting back on added sugars, alcohol, and highly processed foods can bring levels down noticeably within weeks. Very high triglycerides (above 500 mg/dL) carry an additional risk beyond heart disease: they can trigger painful inflammation of the pancreas.
Your Cholesterol Ratio
Some labs report a cholesterol ratio, which is simply your total cholesterol divided by your HDL. If your total is 200 mg/dL and your HDL is 50 mg/dL, your ratio is 4 to 1. A lower ratio is better because it means a larger share of your total cholesterol is the protective kind. Most doctors consider a ratio under 5 to 1 acceptable, with 3.5 to 1 or lower being ideal.
This ratio can be a helpful reality check. Two people with the same total cholesterol of 220 mg/dL might have very different risk profiles depending on whether their HDL is 35 or 65.
Normal Ranges for Children and Teens
Cholesterol standards are different for anyone 19 or younger. Total cholesterol should be under 170 mg/dL, and LDL should be under 110 mg/dL. These thresholds are lower than adult ranges because early plaque buildup in childhood sets the stage for heart disease decades later.
Doctors typically recommend cholesterol screening once between ages 9 and 11 and again between 17 and 21. Children with a family history of very high cholesterol or early heart disease may be tested sooner. Treatment with medication is generally reserved for children whose LDL stays above 190 mg/dL after six months of diet and exercise changes, or above 160 mg/dL if they have additional risk factors for heart disease.
Do You Need to Fast Before a Cholesterol Test?
For years, a 9 to 12 hour fast was standard before any lipid panel. That’s no longer the case for most people. Current guidelines support non-fasting blood draws for routine cholesterol screening, initial risk assessment, and follow-up testing on stable therapy. The practical advantages are obvious: you can get tested at any appointment without planning ahead.
The actual impact of eating on your results is smaller than most people assume. Triglycerides may rise by about 26 mg/dL after a meal, and total cholesterol, LDL, and related measures shift by roughly 8 mg/dL at most. HDL barely changes at all. For the vast majority of people, these differences won’t change the clinical picture.
Fasting is still recommended in a few specific situations: before starting cholesterol-lowering medication for the first time, when triglycerides are very high (above 400 to 500 mg/dL), or when a precise diagnosis of a genetic lipid disorder is needed. If your numbers fall in a borderline range on a non-fasting test and a treatment decision hinges on it, your doctor may ask you to repeat the test fasting for a clearer read.