The present invention is directed to methods for analyzing one or more fluid samples for the presence, amount or identity of one or more analytes optionally present in said samples, which uses a device having one or more round wells with a fixed diameter, the wells exposing a substrate of a specific...http://www.google.com/patents/US6383748?utm_source=gb-gplus-sharePatent US6383748 - Analytical test device with substrate having oriented through going channels and improved methods and apparatus for using same
