Assay modules having assay reagents and methods of making and using same
View Patent ↗We describe assay modules (e.g., assay plates, cartridges, multi-well assay plates, reaction vessels, etc.), processes for their preparation, and method of their use for conducting assays. Reagents may be present in free form or supported on solid phases including the surfaces of compartments (e.g., chambers, channels, flow cells, wells, etc.) in the assay modules or the surface of colloids, beads, or other particulate supports. In particular, dry reagents can be incorporated into the compartments of these assay modules and reconstituted prior to their use in accordance with the assay methods. A desiccant material may be used to maintain and stabilize these reagents in a dry state.
1. A multi-well assay plate comprising
(a) a plate body with a plurality of wells defined therein including:
(i) a plurality of assay wells comprising a dry assay reagent and
(ii) a plurality of desiccant wells comprising a desiccant, wherein said dessicant wells are connected by drying conduits to said assay wells, and said conduits permit the diffusion of water vapor from said assay wells to said desiccant wells and intersect the assay wells at a height in the assay well above the location of said dry assay reagent; and
(b) a plate seal sealed against said plate body thereby isolating said plurality of wells.
2. The multi-well assay plate of claim 1 , wherein a top surface of said plate body has recessed channels connecting assay wells to dessicant wells, and said plate seal is sealed against said channels to form said conduits.
3. The multi-well assay plate of claim 1 , wherein
(i) the wells of said plate are divided into a plurality of assay panels comprising at least one assay well and at least one dessicant well,
(ii) the wells in an assay panel are interconnected via drying conduits, and
(iii) wells in different panels are not interconnected via drying conduits.
4. The multi-well assay plate of claim 3 , wherein said panels consist of one assay well and one desiccant well.
5. The multi-well assay plate of claim 2 , wherein
i) the wells of said plate are divided into a plurality of assay panels comprising at least one assay well and at least one dessicant well,
ii) the wells in an assay panel are interconnected via drying conduits and
iii) wells in different panels are not interconnected via drying conduits.
6. The multi-well assay plate of claim 5 , wherein said panels consist of one assay well and one desiccant well.