How to get your vitamin D tested

Order vitamin D blood testing online

In the majority of US states you can order vitamin D 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 ($47), and I've been happy with their service. You can also compare the other 6 vitamin D test providers I've found.

Take a look at my state-specific issues page if you're in AZ, MD, NJ, NY or RI.

Order at-home blood spot testing

ZRT labs has an at home blood spot testing kit for $75. I haven't reviewed its accuracy compared to standard bloodwork, but it might be a good option if you're the type that would rather wrestle a bear than get a blood draw.

Understanding the results

The American Association for Clinical Chemistry has helpful pages for understanding the test and answering common questions.

Body organ cartoon characters with YouTube play button

If you're interested in self-testing as I am, you might enjoy my explainer videos and my Facebook / Twitter.


Please leave a comment if you see a way to improve this page or if you have any questions. Keep in mind that I know little about the medical side of bloodwork, I just enjoy making sites with lists of things.

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