In one embodiment, a method of pricing a diagnostic test includes receiving data associated with the diagnostic test and setting a price of the diagnostic test. The data associated with the diagnostic test includes an indication of one of a first result of the diagnostic test and a second result of the diagnostic test. The price of the diagnostic test is set based on the indication included in the data associated with the diagnostic test. In another embodiment, a method of pricing a diagnostic test includes receiving data associated with the diagnostic test and charging a first price or a second price for the diagnostic test. The data associated with the diagnostic test includes an indication of one of a first result of the diagnostic test and a second result of the diagnostic test. The first price is charged if the indication is of the first result. The second price is charged if the indication is of the second result. The second price is greater than the first price.