Sensitivity & specificity of DR-70 (TM) lung cancer immunoassay

A multi-center study in the U.S. and China involving a total of 393 healthy subjects and 203 lung cancer patients was conducted to investigate the uti lity of DR-70(TM) immunoassay to detect lung cancer. Interference to DR-70( TM) test due to different disease states and blood collection procedures we re also investigated. Benign and non-cancer diseases that can give rise to elevated DR-70(TM) levels included pneumonia, lung infection, burns, trauma due to surgery, arthritis, renal failure, sepsis etc. The study also showe d that most consistent DR-70(TM) test results were obtained when blood was collected in vacutainers containing SST gel and clot activator. It is impor tant that the DR-70(TM) test not be performed on samples of patients suffer ing from the aforementioned diseases. As these noncancer disease states and improper blood collection procedures may lead to false positive results.