How to Read Your Cholesterol Test Results

Updated July 2026

A standard cholesterol test — the lipid panel — comes back with four numbers: total cholesterol, HDL, LDL, and triglycerides. Here's how to read each one like a pro, and which one actually deserves your attention.

What do the four numbers on a cholesterol test mean?

Your panel reports total cholesterol, HDL ("good"), LDL ("bad"), and triglycerides. They're related but measure different things, and — importantly — they don't simply add up. Here's how to make sense of each.

Why is total cholesterol the least useful number?

Because it's a TOTAL value and the same total can be built from very different combinations of the other three – and with very different health implications. It's the number most people remember, but the one that matters least. Under 200 mg/dL is the usual cutoff, but don't fixate on it — what the total is made of matters far more than the total itself.

What should your HDL be?

Above 40 mg/dL in men and above 50 (ideally 55+) in women, and in general higher is better. HDL is the "Happy" cholesterol that carries cholesterol out of the body, so you want as much of your total in this form as possible. Numbers that fall into the 30s or 20s are a potent risk factor. A couple words of caution: a high HDL does not cancel out a high LDL — each number stands on its own. And a very high number may actually signal paradoxically increased risk. The full HDL picture.

What should your LDL be?

LDL is the number to focus on. It's the "Lousy" cholesterol that parks in artery walls, and it tracks with risk across its entire range. In general, most people want an LDL under 100, those with added risk factors under 70, and the highest-risk patients under 55 mg/dL. The reasoning behind these levels is that at 100, plaque deposition slows way down; at 70 plaque deposition ceases; and under 55 mg/dL plaque regression is possible. The tradeoff is that it typically requires high doses of statins and/or multiple medications to get to LDL levels below 55. Because the right target depends on your personal risk, what your LDL should be lays out the full ladder.

What about triglycerides?

Triglycerides are mostly fat — only about 20% of a triglyceride particle is cholesterol — which is exactly why you can't add HDL + LDL + triglycerides and land on your total. A normal level is under 150 mg/dL, and they sit on a completely different scale from HDL and LDL (a 30-point swing that would be a big deal for LDL is meaningless for triglycerides). Triglycerides get their own deep dive in what are triglycerides (going live Aug 1).

How is total cholesterol calculated?

The numbers relate through a simple formula: Total Cholesterol = HDL + LDL + (Triglycerides ÷ 5). The lab actually rearranges this to calculate your LDL. It's that "÷ 5" — counting only the cholesterol portion of triglycerides — that keeps the four numbers from adding up in a straight line.

Which number should you actually focus on?

LDL, without much competition. It's the most directly tied to heart disease risk; HDL matters mainly when it's low; and total and triglycerides are secondary. The good news is that the number that matters most is also one of the most responsive to what you eat. How to lower your LDL walks through it — and it's the whole reason Step One Foods exists.

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