Order CRP (C-reactive protein) blood testing online
In the majority of US states you can order CRP testing online and have the blood drawn at a local blood draw center (see my general overview of the process).
I'd suggest ordering from Life Extension because they have the cheapest price I know of ($42), and I've been happy with their service. You can also compare the other 6 CRP test providers I've found.
Take a look at my state-specific issues page if you're in AZ, MD, NJ, NY or RI.
Understanding the results
The American Association for Clinical Chemistry has helpful pages for understanding the test and answering common questions.
Sources for "quantitative" testing (not the one most people want)
Unlike the high-sensitivity tests above, quantitative CRP testing can only test large amounts. It's used for identifying specialized infection or inflammation problems.
Show quantitative sources
If you're interested in self-testing as I am, check out my Facebook or Twitter account where I post interesting self-testing news and get a little too excited about blood test sales.