Patent ID: 8337775

Claim:
A multi-purpose device for analyzing a biological fluid sample comprising: (a) at least one sample well for receiving said sample; (b) a capillary passageway communicating with at least one of said sample wells of (a) for receiving said sample from said sample well by capillary action, said capillary passageway including a metering capillary segment defining a uniform volume of said sample fluid, said capillary segment having at least three ends; a first and second end each delimited by the intersection of an air entry passageway with said segment; said air entry passageways separate from said at least one sample well and vented to the atmosphere; and a third end delimited by a capillary stop between said two intersecting points of said air entry passageways with said segment; said third end of said capillary segment in fluid communication with a first reagent well for transferring said uniform sample from said capillary segment to said first reagent well.