Intentional contamination with soap, salt, vinegar, etc. will interfere with the assay, and dilution with water will tend to produce negative results, so the urine collection should be supervised wherever possible.
The “urine cannabinoid” assay currently in use will produce positive results with the following compounds at or above the concentrations indicated:
|11-nor-d9-THC-9-carboxylic acid||50 µg/L|
For additional information please telephone (01392-40) 2952 or (01392 40) 2935.
Cannot be added on to an existing requestSpecimen Labelling Procedure