| abstract |
The operative site (5) of an assay device (1) is dosed with a controlled volume of liquid specimen (6) by a holding means (2) which holds the controlled volume of specimen (6) in contact with the operative site (5), although the holding means (2) remains out of contact with the operative site (5). A sink means (4) is in contact with the margin of the holding means (2) and moves excess specimen away from the holding means (2). In one embodiment the device (1) makes possible a non-wipe test strip architecture. The device (1) can be used in the detection of analytes including glucose or cholesterol in blood or urine and can be interrogated visually, optically or electrically, depending on the reagent used at the operative site (5). |