Order Your Own Vitamin D, 25 Hydroxy Test with My Lab ReQuest™

Vitamin D is a fat-soluble vitamin that is made by the body after exposure to ultraviolet rays from the sun. Vitamin D can also be obtained by taking supplements and from eating certain foods. It helps maintain normal blood levels of calcium and phosphorous. It aids in the absorption of calcium, helping to form and maintain strong bones. Vitamin D also modulates neuromuscular, immune and other cellular functions.

Our Vitamin D test results provide the total level of Vitamin D found in a patient's blood serum, and the diagnostic category, such as Vitamin D deficient or sufficient, indicated by the total level. 

With My Lab ReQuest, you can easily order the Vitamin D testing you need to prioritize your health. Vitamin D testing can be completed at any of our 70 Patient Service Centers across Arizona. Results can then be privately accessed using our secure online results portal. Get tested today and confirm your status in order to make informed decisions about the management of your health!

Why Order Your Own Vitamin D Testing with My Lab ReQuest?

Since the passage of the law in 2015 that allows for consumers in Arizona to order their own lab tests, thousands of patients have used our My Lab ReQuest service to take charge of their health and make more informed healthcare decisions. Our STD Screening is just one of the several infectious disease screenings we offer to patients to assess their health status for various diseases.

Convenient Locations

Schedule an appointment or walk in to any of our 70 Patient Service Centers located across Arizona! We have locations in Metro Phoenix, Tucson, Southern Arizona, and various other locations across Northern and Western Arizona. Moreover, several of our locations are conveniently located inside of Safeway markets so that you can plan your screening around your trip to your neighborhood grocery store.

Learn More about Vitamin D Testing

What is Vitamin D?

Vitamin D is a fat-soluble vitamin that is made by the body after exposure to ultraviolet rays from the sun. Vitamin D can also be obtained by taking supplements and from eating certain foods.

What does Vitamin D do in the body?

Vitamin D helps maintain normal blood levels of calcium and phosphorous. It aids in the absorption of calcium, helping to form and maintain strong bones. Vitamin D also modulates neuromuscular, immune and other cellular functions.

What does Vitamin D testing assess?

Vitamin D tests generally assess the total volume of 25-Hydroxyvitamin D (25OHD), which is the form of Vitamin D circulating in blood. Vitamin D tests may also provide information on the levels of Vitamin D2 and D3, which comprise total Vitamin D levels.

What information does the Vitamin D test provide?

Our Vitamin D test results provide the total level of Vitamin D found in a patient's blood serum, and the diagnostic category, such as Vitamin D deficient or sufficient, indicated by the total level. We also provide information on the levels of Vitamin D2 and Vitamin D3 in blood serum.

What are Vitamin D2 and Vitamin D3?

Vitamin D2 is derived from fungal and plant sources, and is commonly found in supplements, such as multivitamins, in the U.S. Vitamin D2 may also be used in the pharmacological treatment of Vitamin D deficiency. Vitamin D3 is derived from animal sources and is made in the skin following exposure to sunlight. The LC/MS/MS technique is able to directly quantify Vitamin D2 and Vitamin D3. By comparison, immunoassay-based Vitamin D tests can only indirectly measure Vitamin D2 and Vitamin D3.

Do I have to fast before I submit a sample for Vitamin D testing?

No.