Visual C++ :: How To Tell If Drive Is BitLocker Encrypted Without Admin Privilege

For my purpose all I need to know is drive's BitLocker encryption status by its DOS path. Something like this:

Code:
enum DriveEncryptionStatus{
Unprotected,
Protected,
Unknown
};
DriveEncryptionStatus = GetDriveBitlockerEncryptionStatus(L"C:");

I was able to find the Win32_EncryptableVolume class that unfortunately comes with this caveat:

To use the Win32_EncryptableVolume methods, the following conditions must be met:

You must have administrator privileges.

How to do this without running as an administrator?