A test strip and method for detecting an analyte present in a sample. The test strip comprising: a buffer addition zone to which a buffer may be added; an absorbent zone proximal to the buffer addition zone; one or more test zones distal to the buffer addition zone, at least one of the test zones including...http://www.google.com.tw/patents/US7309611?utm_source=gb-gplus-share專利 US7309611 - Prewetting stop flow test strip
