Doctor refuses to order magnesium test for patient on PPIs
DEAR DR. ROACH: I recently read in your column that you test your patient’s magnesium levels when they have been on long-term proton-pump inhibitors (PPIs). When I asked my doctor to include this in his order for blood tests, I was told that the test isn’t accurate, and he wouldn’t order it. Is there a special magnesium test that I can request? When I looked it up on the internet, this is what I found: “Standard magnesium blood tests (serum) are generally not considered an accurate indicator of total body magnesium. While they can detect severe deficiency, they are unreliable ...