Akiyama H, Barger S, Barnum S, et al
Conjugation refers to the addition or coming together of compounds in order to neutralize toxins, making them more easily excreted through the urine or bile
One reason for this is that the level of glutathione will fluctuate throughout the day from its lowest in the early morning to depletion from routine exposure to toxic substances (like alcohol), pathogens, cigarette smoke, car exhaust, drugs, certain foods, stress level, illness, and many similar factors, so repeated testing could be required to set a baseline
But not everyone digests the acid in a way that releases the sulfur, so not everyones urine will smell
And unless you change not only how much but also what you eat, you will never be able to get off of these drugs