I took a dose of hydrocodone at 11pm and was tested by my pain management physician at 9 am the following morning and the test showed to traces of hydrocodone in my system. Why is this? This is resulting in my doctor cutting me off from pain medication i clearly need.

I take a variety of supplements and was wondering if they might decrease the half life of the hydrocodone in my body. (Trimethylglycine, Milk Thistle, Chlorella, Niacin, Turmeric (with piperine)