The Matrix Cup has been especially manufactured for ease of use and accuracy. The cup has a built in temperature strip to validate urine temperature and is sealed to prevent any cross contamination.
The Matrix Cup is an immunochromatography based one step in vitro test. It is designed for qualitative determination of drug substances in human urine specimens. This assay may be used in the point of care setting. Below is a list of cut-off concentrations for each drug.
Specific Gravity: Testing for sample dilution. This test is based on the apparent pKa change of certain pretreated polyelectrolytes in relation to ionic concentration. In the presence of an indicator, the colours range from dark blue or blue-green in urine of low ionic concentration to green and yellow in urine of higher ionic concentration.
pH: Testing for the presence of acidic or alkaline adulterant. This test is based on the well known double pH indicator method that gives distinguishable colours over wide pH range. The colours range from orange (low pH) to yellow and green to blue (high pH).
Oxidants: Testing for presence of oxidizing reagents. In this reaction, a colour indicator reacts with oxidants such as hydrogen peroxide, ferricyanide, persulfate, or pyridinium chlorochromate to form a blue colour complex. Other colours may indicate the presence of other oxidants.