Patent ID: 7384598
Filing Date: 2008-06-10
Classification: G01N,Y10T

Abstract:
1. A diagnostic device comprising: a housing comprising i) an opening for receiving a sample, ii) a first chamber into which the sample may be directed, iii) a first channel positioned to provide unreacted sample to the first chamber, and iv) a second channel positioned to remove unreacted sample from the first chamber; a test strip removably attached to the housing, wherein the test strip defines a test surface in fluid communication with the first chamber so that the sample may be reacted; a second chamber positioned for receipt of unreacted sample from the first chamber, the second chamber in fluid communication with the second channel; means for inducing a negative pressure differential on the sample comprising a syringe having a piston that slidingly and sealably engages the second chamber, the means for inducing a negative pressure differential on the sample directs the sample through the first channel, into the first chamber, to the test surface, and thereafter removes an unreacted portion of the sample from the test surface, through the second channel, and into the second chamber; and a first indicator corresponding to a first piston position that indicates the sample has reached the first chamber and a second indicator, the second indicator corresponding to a second piston position that indicates the sample has reached the second chamber.