Granted Patent B2

US 9,528,958 · App. 14/835,755 · Granted Dec 27, 2016

Inventors: Lynsey Whyte (Newtonmore, GB); Scott Sloss (Inverness, GB); David McColl (Inverness, GB); Neil Whitehead (Dingwall, GB); Antony Smith (Dingwall, GB)

Assignee: LifeScan Scotland Limited

G01N27/3272G01N27/3274G01N33/492B01L3/502B01L2300/0825

Abstract

Claims (22)

1. A method for determining an analyte in a bodily fluid sample, the method comprising:

providing an analytical test strip, the analytical test strip having:

an electrically insulating substrate layer;

at least one reference electrode and a plurality of working electrodes, all of which are disposed on the electrically insulating substrate layer; and

an enzymatic reagent layer disposed over at least one of, but not all of the working electrodes;

applying a bodily fluid sample to the analytical test strip such that the applied bodily fluid sample fills a first capillary sample-receiving chamber and a second capillary sample-receiving chamber of the analytical test strip and is prevented from flowing between the first capillary sample-receiving chamber and the second capillary sample-receiving chamber by a physical barrier island;

measuring at least a first response of the analytical test strip; and

determining the analyte based on the first measured electrochemical response.

2. The method of claim 1 further including:

measuring a second response of the analytical test strip that is dependent on bodily fluid sample in the second capillary sample-receiving chamber; and

determining a characteristic of the bodily fluid sample based on the second measured response.

3. The method of claim 1 wherein the bodily fluid sample is whole blood.

4. The method of claim 1 wherein the analyte is glucose.

5. The method of claim 1 wherein the applying step includes applying a single bodily fluid sample to a sample application opening of the first capillary sample-receiving chamber a sample application opening of the second capillary sample-receiving chamber, and

wherein the sample application opening of the first capillary sample-receiving chamber and the sample application opening of the second sample-receiving chamber are juxtaposed such that the single bodily fluid sample can be simultaneously applied thereto.

6. The method of claim 5 wherein the physical barrier island extends longitudinally along the first capillary sample-receiving chamber and the second capillary sample-receiving chamber from the sample application opening of the first capillary sample receiving chamber and the sample application opening of the second capillary sample-receiving chamber.

7. The method of claim 6 wherein the physical barrier island is disposed such that:

a first shared sample entry chamber is defined at the first sample application opening of the first capillary sample-receiving chamber and the first sample application opening of the second capillary sample-receiving chamber and

a second shared sample entry chamber is defined at the second sample application opening of the first capillary sample-receiving chamber and the second sample application opening of the second capillary sample-receiving chamber.

8. The method of claim 7 wherein a width of the first shared sample entry chamber is greater than the sum of widths of the first sample application opening of the first capillary sample-receiving chamber and the first sample application opening of the second capillary-sample receiving chamber, and

wherein a width of the second shared sample entry chamber is greater than the sum of widths of the second sample application opening of the first capillary sample-receiving chamber and the second sample application opening of the second capillary-sample receiving chamber.

9. The method of claim 1 wherein the analytical test strip is configured as an electrochemical-based analytical test strip.

Assignments (16)

Continuity (2)