Case 1 Follow the instructions to work through the calculation of cost per billable test for a drug screen composed of five independently measurable assays, using the following information: Instrument was purchased for $116,000 and is depreciated over a period of five years The service contract for the instrument is $9,212 per year The laboratory reports 539 drug screens per month The reagent costs are as follows: Reagent Cost per Kit Annual Usage Amphetamines $135 128 kits Barbiturates $130 125 kits Benzodiazepines $130 133 kits Cocaine $145 129 kits Cannabinoids $115 146 kits . From the budget report you have spent the following: Medical supplies $205,874 Non-medical supplies $51,722 Other direct expenses $47,892 Travel and education $22,171 Salaries $1,892,364 . Total billable tests for the year = 789, 352