SUMMARY
A multimeter resistance measurement is not recommended for determining acceptable semiconductor devices. As a quick check for devices in a circuit, a multimeter will allow you to determine if a device has failed catastrophically. The device with the lowest leakage current at 3V is not necessarily the one with the lowest leakage current a high voltage.

PRECAUTIONS
1. Ensure that the resistance reading is only being taken across
   the device and not across something in parallel with it.
2. If a disc type device is being measured, make sure that
   it is under sufficient load to ensure that the internal components
   are pressed together and high resistance readings are
   avoided.