Emerge CareWhat does a vitamin D test measure?
The test looks at a specific form of vitamin D in your blood. Who tends to be tested, and why more is not simply better.
A vitamin D test measures a particular form of the vitamin circulating in your blood, which reflects both what you get from sunlight and what comes from food or supplements. It is not routinely done for everyone.
More is not simply better. Very high levels from over-supplementing can cause harm, which is why the amount to take, if any, is a question for a clinician rather than something to scale up on your own after reading a result.
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Emerge Care is a wellness app, not a medical device or a substitute for professional care. It does not diagnose or treat conditions. Always consult a qualified clinician for medical decisions. In an emergency, call your local emergency number.
