US 11,703,502 B2
Vertical flow assay device for detecting glucose concentration in a fluid sample
James R. Petisce, Westford, MA (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Appl. No. 16/477,440
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
PCT Filed Jan. 25, 2018, PCT No. PCT/US2018/015175
§ 371(c)(1), (2) Date Jul. 11, 2019,
PCT Pub. No. WO2018/140568, PCT Pub. Date Aug. 2, 2018.
Claims priority of provisional application 62/451,165, filed on Jan. 27, 2017.
Prior Publication US 2019/0383801 A1, Dec. 19, 2019
Int. Cl. G01N 33/53 (2006.01); G01N 31/22 (2006.01); G01N 33/66 (2006.01)
CPC G01N 33/5302 (2013.01) [G01N 31/22 (2013.01); G01N 33/66 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An assay device for detecting for the presence of at least one glycemic analyte in a fluid sample comprising:
a test zone having an absorbent body positioned for receiving the fluid sample by a downward gravity flow,
wherein said absorbent body includes a plurality of vertically arranged membrane assays where the fluid sample flows vertically through each membrane assay, each membrane assay includes an assay reactant for detecting a different glycemic analyte and a visual color indicator to produce a visual color indication of a selected analyte at or above a predetermined concentration in the fluid sample,
wherein each of said membrane assays overlie one another.