Please enter your payment information below. You'll be able to begin the test on the next screen. Your card will be billed $9.95.

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Important: We do not recommend taking the SDS on a smartphone!
Using non-supported browsers and devices may result in difficulty completing the SDS and/or generating a report.
Supported devices: all personal computers, laptops, and iPads (iPads require iOS 7.0 or higher).
Supported browsers: latest versions of Chrome, Safari, Firefox, and Internet Explorer 9/10/11.

Billing Information * Required

Registration Information * Required

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If you are outside of the US simply enter the closest state and the zip code of the closest U.S. city (e.g., 33549).

The SDS costs $9.95

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