Is CRP a test you should be getting done? Chances are, you’ve never even heard of it. (If you have: bonus points to you!) CRP stands for C-Reactive Protein, and it’s a marker for inflammation. But we also use it as a screening test for heart disease risk.
At this point you might be asking: what does inflammation have to do with heart disease, exactly?
A lot, as we’re starting to learn.
Chronic inflammation is at the root of many diseases. When inflammation gets into otherwise healthy tissues it can inflict long-term damage, and it poses a particular problem for the heart. Inflammation triggers a series of processes and chemical reactions that encourages plaque buildup in the arteries–narrowing those vessels and making blood clots more likely. This is the root of coronary artery disease. The American Heart Association says that people with high CRP are twice as likely to have cardiac arrest than people with low CRP. Which makes it a very important risk factor. But, CRP is a relatively new test, and not exactly standard practice–yet.
The kicker is that CRP is a non-specific marker of inflammation, meaning, it doesn’t tell us where the inflammation is within your body. So this is not a diagnostic test. Not like a pregnancy test, where you get a yes or a no. It gives us an idea about the degree of inflammation you’ve got going on.
Is this test for everyone? No. If you already have known cardiac disease, or have other major risk factors anyway, the result of a CRP test is probably not going to significantly change your treatment. You should already be working on your modifiable risk factors (like quitting smoking and eating healthfully). A CRP test doesn’t replace other ways of monitoring heart disease risk, like checking blood pressure and cholesterol. But if you have intermediate risk, it could be a very useful screening test. Essentially, it comes down to individual factors, and a conversation with your family physician.
If you get the test, and have an elevated CRP, what should you do to lower it?
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