I get my Test. Cyp. in the 1ML, 200MG/ ML ampules. If I use 1/2 the ampule for 100mg. (i.e. 2 1/2 of them for 500mg.) the pharmacy says I cannot use the other 1/2 of ampule next week as there are no preservatives in the single use ampules unlike the 10ml vile that does have preservatives in it and is multi use. Is the Test. Going to be OK for 1 week storage at room temp. in a dark cabinet in the box? I would think so but Im not a pharmacist. What do ya'll think?