Average total cost, sometimes referred to as the per unit total cost, is the per unit cost. This includes fixed costs, those costs that are required for production but do not change based on output, and variable costs, those costs that increase (or decrease) as output increases (or decreases).
The basic stress test involves walking on a treadmill while your electrocardiogram (EKG) is continuously monitored for changes that may indicate a blocked artery to the heart. However, there are options if you are unable to walk on a treadmill or if your EKG is already abnormal at rest. The existing options include: imaging stress tests -- echocardiographic or nuclear -- and pharmacologic stress tests -- adenosine and dobutamine.
1 EMG testing is typically covered by health insurance. For patients with health insurance, there may be a copay of $10-$50 or coinsurance of about 10%-50%.  For patients without insurance, the test typically costs between $150 and $500 per extremity, depending on the health care provider.