A lipid panel is a common blood test that reports your blood fats. If you have ever looked at the printout and wondered what “borderline high” means, this guide walks through the four values it usually reports and the standard categories used to describe them. The goal here is to help you read the numbers, not to interpret your own result.
This article is educational and does not replace clinical training or advice for a specific patient. All clinical decisions rest with the treating clinician.
What is a lipid panel
A lipid panel is a blood test that measures cholesterol and triglyceride levels, the fats carried in your blood. It commonly reports four values: total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. Each of these has standard categories used to group results, and those categories are presented below only as the standard categories per the source, not as a diagnosis. Diagnosis is made by a clinician who sees your full picture.
Reference ranges printed on your report can vary by lab. Always read your result against the range your own laboratory prints next to it.
How to read your lipid panel step by step
Step 1: Identify the four values
Find the four measured results on your report: total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. These are the values that carry the standard categories described in this guide.
Step 2: Check the units
The categories in this guide are expressed in mg/dL (NCBI Bookshelf). Confirm the units printed on your own report before comparing, because a report using different units will not line up with these numbers. This guide does not provide unit conversions.
Step 3: Compare each value to the standard categories
Match each of your four values to the reference table below. The table lists the standard categories per NCEP ATP III. Note where each value falls, but treat the category label as a description, not a conclusion.
Step 4: Read against your lab’s own range
Reference ranges vary by lab. If the range your laboratory prints differs from the categories here, note both. Small differences between labs are expected.
Step 5: Bring the report to a clinician
A category label is not a diagnosis. The next step for any result is a conversation with a clinician who can interpret it in the context of your overall health.
Standard lipid categories (reference table)
The standard categories per NCEP ATP III, all in mg/dL, are shown below (NCBI Bookshelf). Reference ranges vary by lab, so compare these against the range your own report prints.
| Test | Category | Value (mg/dL) |
|---|---|---|
| Total cholesterol | Desirable | Under 200 |
| Total cholesterol | Borderline high | 200 to 239 |
| Total cholesterol | High | 240 or above |
| LDL cholesterol | Optimal | Under 100 |
| LDL cholesterol | Near optimal | 100 to 129 |
| LDL cholesterol | Borderline high | 130 to 159 |
| LDL cholesterol | High | 160 to 189 |
| LDL cholesterol | Very high | 190 or above |
| HDL cholesterol | Low | Under 40 (men) or under 50 (women) |
| HDL cholesterol | High | 60 or above |
| Triglycerides | Normal | Under 150 |
| Triglycerides | Borderline high | 150 to 199 |
| Triglycerides | High | 200 to 499 |
| Triglycerides | Very high | 500 or above |
Common mistakes when reading a lipid panel
- Ignoring your lab’s own reference range. Ranges vary by lab, so a value should be read against the range printed on your report, not only against a general table.
- Confusing units. The categories here are in mg/dL, and a report in different units will not match without conversion, which this guide does not provide.
- Treating a category label as a diagnosis. Labels such as borderline high or high describe where a number falls per the source; diagnosis is made by a clinician.
- Overlooking that HDL cutoffs differ by sex. Per the source, HDL is considered low under 40 mg/dL in men and under 50 mg/dL in women (NCBI Bookshelf).
- Reading one value in isolation. The four results are usually considered together, and that interpretation belongs to a clinician.
When to see a clinician
Any lipid panel result is best discussed with a clinician, especially when one or more values fall in the borderline high, high, or very high categories per the source. This guide does not set an urgency threshold and does not offer treatment, dosing, or management advice. The clinician who ordered the test can interpret the numbers alongside your history and decide what, if anything, to do next.
How Phở Labs approaches this
Phở Labs publishes source-linked explainers so that every figure you read can be traced back to its reference. In this article, the lipid categories all link to the same public source, and where a value is not fixed we say so rather than inventing a number. That is the standard we hold ourselves to: cite the source, or say we cannot.
References
- Lipid panel cholesterol categories (NCEP ATP III): (NCBI Bookshelf)