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Updated: May 2, 2026

The Use of a β-lactamase-based Conductimetric Biosensor Assay to Detect Biomolecular Interactions
Published on: February 1, 2018
IDEXX SNAP beta-lactam ST validation for penicillin G detection
Abstract:
IDEXX has produced a robust and improved rapid test kit optimized to detect penicillin G in a variety of milk matrixes. The SNAP Beta-Lactam ST Test Kit is designed to be run without the use of a heat block. The new test is optimized to ensure a detection capability for penicillin G that is at or below the European Union maximum residue limit of 4 parts per billion. The test can be used with commingled cow milk, commingled goat milk, commingled sheep milk, and reconstituted whole fat powdered milk. The SNAP Beta-Lactam ST Test Kit contains all the items necessary to run and interpret the test in a single package. No heat block or reader is required. The results can be read visually or with an IDEXX SNAPshot or SNAPshot DSR Reader. The total assay time is approximately 7 minutes.
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