Test strip sensitivity
Test strip evaluation
Two criteria are essential for the evaluation of test strip usability:
• test strip sensitivity and
• test strip specificity
The level of sensitivity is a very important criterion for test strip evaluation. The level of sensitivity is the concentration of a substance at which at least 90 of 100 different specimens are positive.
The level of sensitivity is the smallest concentration of a substance that can be detected by the test strip.
Detection limit of particular tests is so low that even very small changes in urine composition cause changes in the color of test paper slips, yielding positive reaction.
The limits of detection differ both for particular analytes and for test strips from different manufacturers.
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