Figure 4: Development of rapid strip diagnostics kit and clinical sample test (A) Schematic draw of the principles of rapid strip kit is shown. (B) Experimental flow is summarized in graphical diagram. (C) Pictures of representative test results are shown. Most of healthy individuals were negative, showing only one control line. More than half of the lung cancer patients showed two lines, one for the control and another for the elevated SAA. The test results are summarized in Table 3.