The below chart attempts to cover all possible sources of a false positive urine test result. Substances listed in the right column may cause a false positive for the drug/metabolite shown in the left column. Brand names are shown in brackets.
Let's start with a basic definition: A platform is a system that can be programmed and therefore customized by outside developers -- users -- and in that way, adapted to countless needs and niches that the platform's original developers could not have possibly contemplated, much less had time to accommodate.
A system is a general set of parts, steps, or components that are connected to form a more complex whole. For example, a computer system contains processors, memory, electrical pathways, a power supply, etc. For a very different example, a business is a system made up of methods, procedures, and routines.