Some people posting here need to wake up and smell the coffee!
This has come from the GCAA, not EK. If you believe it's an intrusion then you might want to leave the UAE. Oh, by the way, drug and alcohol tests are not restricted to the UAE. They are common place in stand alone companies as well as those bidding for contracts where they are a requirement to bid for said contract.
If you are not a habitual abuser then it would appear you don't have to worry.
Having said that, it's Christmas day so I'm off for some ritual abuse
Happy Christmas and happy landings to all.