Integrated assay device and housing
View Patent ↗A laminated, integrated, analyte assay device and methods of using the device are described. The assay device is useful as an inexpensive, disposable assay device for detecting the presence and/or amount of a particular analyte in a body fluid or other sample.
1. A laminated analyte assay device, comprising:
a support strip and
an overlamina in contact with the support strip, wherein said overlamina is embossed to form one or more recesses between the support strip and the overlamina, and the support strip and overlamina are bonded together at surfaces other than said recesses;
an assay strip comprising at least one reagent for detecting an analyte present in a sample, the assay strip positioned in one of said one or more recesses, for fluid communication with a sample opening in the overlamina for receiving the sample,
wherein the overlamina is embossed to form a well or recess at said sample opening, and further includes a separate viewing opening, for viewing at least a portion of the assay strip, and
the well or recess being sized to hold a preselected volume of a sample, where the preselected volume of sample is sufficient to saturate the assay strip without over-filling the recess that the assay strip is positioned in.
2. The device of claim 1 , wherein the overlamina is transparent.
3. The device of claim 1 , wherein the support strip and the overlamina are secured in contact at surfaces other than said recesses by a pressure-sensitive adhesive.
4. The device of claim 1 , wherein the support strip is made of paperboard.
5. The device of claim 1 , wherein the support strip is embossed.
6. The device of claim 1 , wherein the overlamina is made of paperboard.
7. The device of claim 1 , wherein the assay strip is a lateral flow assay strip.
8. The device of claim 1 , further comprising a desiccant, wherein said desiccant is integrated into the assay strip, attached to the bottom surface of the overlamina, attached to the top surface of the support strip, or otherwise disposed within the assay device, in the form of a film membrane having desiccant dispersed therein.
9. The device of claim 1 , prepared according to a process of reel-to-reel manufacturing.
10. The device of claim 1 , wherein at least one of said support strip and overlamina is embossed to form a further recess which is in fluid communication with a further opening in the overlamina, separate from said sample opening and viewing opening.
11. The device of claim 10 , wherein said further opening is adapted to secure a tube that may be removably inserted into said further opening.
12. The device of claim 11 , further comprising a tube which is removably inserted into said further opening.
13. The device of claim 12 , wherein said tube forms a liquid-tight seal with said further opening.
14. The device of claim 1 , wherein the preselected volume of the well or recess is from about 5 μL to about 500 μL.
15. A method for detecting the presence or absence of an analyte in a sample, comprising:
providing a laminated analyte assay device comprising:
(i) a support strip,
(ii) an overlamina in contact with the support strip, wherein said overlamina is embossed to form one or more recesses between the support strip and the overlamina, and the support strip and overlamina are bonded together at surfaces other than said recesses;
(iii) an assay strip comprising at least one reagent for detecting an analyte present in a sample, the assay strip positioned in one of said one or more recesses, for fluid communication with a sample opening in the overlamina for receiving the sample,
(iv) wherein the overlamina is embossed to form a well or recess at said sample opening, and further includes a separate viewing opening, for viewing at least a portion of the assay strip, and
(v) the well or recess being sized to hold a preselected volume for receipt of a sample of a preselected volume, where the preselected volume of sample is sufficient to saturate the assay strip without over-filling the recess that the assay strip is positioned in, and
introducing a sample to fill the well or recess at the sample opening in the overlamina, whereupon the sample contacts the at least one reagent for detecting an analyte on the assay strip.
16. The method according to claim 15 , wherein said detecting is achieved by visual inspection of at least a portion of the assay test strip through said viewing opening in the overlamina.