All good here, the tests arrived promptly, were very reasonably priced and seem to work well. As a smoker of Cannabis I can recommend the 4 panel saliva tests for checking yourself. Please be aware that the detection limit is higher than the Drugwipe tests that the Police use so DO NOT take these as gospel but they are a good indicator in my opinion. Message for UK Drug Testing: Is there any possibility of getting the 4 panel tests detection limit the same as the Drugwipe S that the Police use please? Sadly the Drugwipe S are not made available to the public, which is not really cricket!