On the basis of two controlled clinical trials of LeukoScan to demonstrate the safety and effectiveness of this product for defining the presence and location of osteomyelitis, in a total of 175 evaluable patients, LeukoScan had a sensitivity of 88.2%, a specificity of 65.6%, an accuracy of 76.6%, a positive predictive value of 70.8%, and a negative predictive value of 85.5%.