Profile: Runbio Biotech Co.,Ltd. is a biotechnology company that offers a wide range of in vitro rapid diagnostic testing kits & materials. The one-step alpha fetoprotein (AFP) tests are qualitative immunoassays for detecting elevated levels of alpha fetoprotein (AFP) in serum. The concentration of AFP in serum is effectively used to aid in the diagnosis of hepatoma, ovarian, testicular and presacral terato-carcinomas. The one step prostrate specific antigen test is a rapid direct binding test for the visual detection of prostrate specific antigen (PSA) in serum as an aid in the diagnosis of prostrate cancer. The test is based on the principle of sandwich immunoassay for determination of PSA in serum. Monoclonal and polyclonal antibodies are employed to identify PSA specifically. This one step test is very sensitive and only takes about 10-20 minutes.