Why These Two Tests Matter
Your regular cholesterol (lipid) panel does not tell the whole story. Two additional blood tests — Lp(a) and hs-CRP — can flag heart attack and stroke risk even when your cholesterol numbers look perfectly normal. Both are simple, one-time or occasional blood draws worth discussing with your doctor.
1. Lp(a) — Lipoprotein(a)
A cholesterol-like particle similar to LDL (“bad” cholesterol), but with an extra protein attached. It is genetically determined — your level is set mostly from birth and does not change much with diet or exercise.
- Why it matters: Makes blood more prone to clotting and speeds up artery plaque buildup, raising risk of heart attack, stroke, and aortic valve disease — even with normal LDL.
- Testing: Usually a one-time test, since levels stay stable through life. Not included in a standard lipid panel — must be ordered separately.
- Risk threshold: Above ~50 mg/dL (or 125 nmol/L) is considered high risk.
- Who should test: Anyone with family history of early heart attack/stroke, or heart disease despite good cholesterol numbers.
- Management: No approved drug lowers Lp(a) directly yet (several in trials) — focus shifts to controlling other risk factors harder: LDL, blood pressure, smoking, diabetes.
2. hs-CRP — High-Sensitivity C-Reactive Protein
CRP is a protein made by the liver in response to inflammation. The high-sensitivity version detects very small amounts, making it useful for assessing heart risk from chronic, low-grade inflammation — unlike regular CRP, which is used for infections.
| hs-CRP Level | Risk Category |
|---|---|
| Below 1.0 mg/L | Low risk |
| 1.0 – 3.0 mg/L | Average / moderate risk |
| Above 3.0 mg/L | High risk |
| Above 10 mg/L | Likely infection/inflammation elsewhere — retest later |
Practical notes:
- Avoid testing during or right after infection, cold, flu, or injury — wait 2–3 weeks.
- No fasting required, unlike a lipid panel.
- Raised by: obesity, smoking, diabetes, high blood pressure, sedentary lifestyle, poor diet, gum disease.
- Lowered by: regular exercise, weight loss, Mediterranean-style diet, quitting smoking, statins.
The Bottom Line
Ask your doctor about Lp(a) as a one-time test and hs-CRP alongside your regular lipid profile — together they give a fuller picture of heart risk than cholesterol numbers alone, especially useful for families reviewing lab reports from a distance.
You must be logged in to post a comment.