Detection of Cardiac Troponin or Biological Markers via Shear Horizontal Surface Acoustic Wave Biosensor using a Wet-Dry Bioanalytical Technique

The illustrated embodiments include a method of operating a SAW sensor to detect a sample in a fluid which includes the steps of: providing a SAW sensor with a functionalized detection lane in a handheld, portable assay and sensor system; maintaining the functionalized detection lane of the SAW sensor dry until the sample is fluidicly disposed in the detection lane; fluidicly disposing the sample in the functionalized detection lane; removing fluid the functionalized detection lane to concentrate the sample in the functionalized detection lane to increase the probability of a specific antibody-antigen interaction; washing the functionalized detection lane so that substantially only the specific antigen-antibody interaction remains in the functionalized detection lane; removing fluid from the functionalized detection lane again; and measuring concentration of the sample while the functionalized detection lane is fluid-free.