Currently, a 1 ml vial of Aplisol PPD (NDC 42023-104-01), enough for 10 tests, is dispensed each time one dose is ordered.  It is a multi dose vial and per manufacturer "Once entered, vial should be discarded after 30 days" (under refrigeration). There is no mechanism in place to use the remaining 9 tests. In simple terms, let's say we bought 100 vials. Currently, this will service 100 patients. Instead, 100 vials have the potential of servicing 1000 patients!!

As an example, regular insulin (300 units / 3 ml) MULTI DOSE vial that we have on the floor is good for 28 days at room temp. Often times, one dose is only 10 units or 0.1 ml. 

A quick price check on the internet shows that the Aplisol is $150 per vial. We probably get it for less. Nevertheless, we are throwing away 9/10 tests or $135 each time. Perhaps, we can implement a process, like regular insulin, where the vial can be re-use and only discard it after 30 days or when empty?