[Moltke]

Where exactly did the OPCW get those samples from? Were they taken from the Skripals directly?

Else, GIGO.

[mac_truck]

Where exactly did the OPCW get those samples from?

The samples were turned over to the OPCW by the British, presumably they're same samples the British used to conduct their own testing.

The only party not given samples so far have been the Russians.

[Winniesboy]

Yes