lipid profile ranges
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lipid profile normal reference ranges cholesterol triglycerides HDL LDL 2024
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https://www.mayoclinic.org/tests-procedures/cholesterol-test…
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Here is a comprehensive overview of lipid profile reference ranges, based on the NCEP ATP III classification (used in clinical practice):
Lipid Profile Reference Ranges
Total Cholesterol
| Level | Classification |
|---|---|
| < 200 mg/dL | Desirable |
| 200–239 mg/dL | Borderline high |
| ≥ 240 mg/dL | High |
LDL Cholesterol ("bad" cholesterol)
| Level | Classification |
|---|---|
| < 100 mg/dL | Optimal |
| 100–129 mg/dL | Near/above optimal |
| 130–159 mg/dL | Borderline high |
| 160–189 mg/dL | High |
| ≥ 190 mg/dL | Very high |
For patients with established cardiovascular disease or diabetes, LDL < 70 mg/dL is the target. For very high-risk patients (e.g., recent ACS), some guidelines now recommend < 55 mg/dL.
HDL Cholesterol ("good" cholesterol)
| Level | Classification |
|---|---|
| < 40 mg/dL (men) | Low — increased CV risk |
| < 50 mg/dL (women) | Low — increased CV risk |
| 40–59 mg/dL | Acceptable |
| ≥ 60 mg/dL | High — protective/desirable |
Triglycerides
| Level | Classification |
|---|---|
| < 150 mg/dL | Normal |
| 150–199 mg/dL | Borderline high |
| 200–499 mg/dL | High |
| ≥ 500 mg/dL | Very high (pancreatitis risk) |
Non-HDL Cholesterol (Total cholesterol − HDL)
| Level | Classification |
|---|---|
| < 130 mg/dL | Optimal (goal for healthy adults) |
| 130–159 mg/dL | Near optimal |
| ≥ 160 mg/dL | Above optimal |
Key Clinical Notes
- Fasting vs. non-fasting: Total cholesterol and HDL can be measured non-fasting; LDL and triglycerides are most accurate after 9–12 hours of fasting.
- Sex differences: Women generally have lower lipid values than men before age 50; after menopause, total cholesterol in women often exceeds men's.
- Seasonal variation: Lipid values in winter (Dec–Jan) can be ~2.5% higher than in summer (Jun–Jul).
- Modifiable factors: Obesity, smoking, alcohol excess, hypothyroidism, and diabetes all adversely affect the lipid profile.
- Lp(a): Not part of a routine lipid panel, but elevated levels are an independent cardiovascular risk factor.
Sources: NCEP ATP III (JAMA 2001); Berek & Novak's Gynecology, Table 22-6; NHLBI Blood Cholesterol Guidelines.
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