Solid phase test device for sialidase assay
First Claim
1. A solid-phase test device for the detection of sialidase activity in a fluid sample, configured as a strip for a lateral flow assay, the device comprising a first flow matrix, a second flow matrix and an absorbent pad sequentially arranged on a non-absorbing solid support in fluid communication with each other to allow flow of fluid from said first flow matrix through said second flow matrix into said absorbent pad, wherein a sialidase detecting composition comprising a sialidase substrate and a color-developing reagent is movably bound in a re-suspendable form on said first flow matrix, and wherein said sialidase substrate when exposed to sialidase yields an intermediate compound which reacts with said color-developing reagent to form a detectable color change.
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Abstract
A solid-phase test device and a method for the detection of sialidase activity in a fluid sample. The test device includes a solid support provided with a pre-deposited dry form of a sialidase detecting composition. The sialidase detecting composition includes a sialidase substrate and a color-developing reagent. When the sialidase substrate is exposed to sialidase it yields an intermediate compound which reacts with the color-developing reagent to form a detectable color change.
20 Citations
20 Claims
- 1. A solid-phase test device for the detection of sialidase activity in a fluid sample, configured as a strip for a lateral flow assay, the device comprising a first flow matrix, a second flow matrix and an absorbent pad sequentially arranged on a non-absorbing solid support in fluid communication with each other to allow flow of fluid from said first flow matrix through said second flow matrix into said absorbent pad, wherein a sialidase detecting composition comprising a sialidase substrate and a color-developing reagent is movably bound in a re-suspendable form on said first flow matrix, and wherein said sialidase substrate when exposed to sialidase yields an intermediate compound which reacts with said color-developing reagent to form a detectable color change.
Specification