Welcome to the Ostelin D-Test

There are a number of factors that contribute to low Vitamin D, so we've put together a quick test to gauge whether you might be at risk.

Please note: any personal information you provide will only be used to process your D-Test results unless you consent otherwise.

Thanks [name], first we'd like to get to know you a little.

What is your gender?


Please select the skin tone closest to yours.

Great, now we'd like to know some more about your lifestyle.

During a typical workday, where do you spend the majority of your time?

During an average [season] day, how long do you typically spend outdoors exposed to sunlight between the hours of 10am and 2pm?

Thanks for taking the Ostelin D-Test

To view and receive a copy of your results, please submit your email address.

Thanks for taking the Ostelin D-Test - your bones will thank you for it.

Your risk category is

Based on your answers and the evidence supporting known risk factors associated with insufficient levels of Vitamin D, it appears you may be in the [result] risk category.

Your test results have been sent to your inbox.

How is my risk calculated?

Risk is determined by three main variables: lifestyle, environment and personal. We’ll send you some information that may help you better understand what [result]-risk means and how those variables may affect you.

Consult with your healthcare professional.

Visit our Health Hub to learn more