Daryo Oct 18, 2015:

there might be a problem ... "Dispensable Unit number assigned" should be considered as a whole;
the meaning might be slightly different - the whole term is "Dispensable Unit number" so it might be about numbering "Dispensable Units" (for a double blind trial) without knowing the exact dosage (for a double blind trial) nor if the "Dispensable Unit" is just a placebo; so in that case "Dispensable Unit" would just one "dose" of medication without knowing if it contains 5, 10 20 etc mg of active ingredient or even 0 mg.