blood in urine test strips - MedHelp
Test strips that change color to reveal the amount of a substance in a liquid (for example, sugar in urine, ketones in urine, certain meds/drugs in urine, high-school 'litmus paper' tests for the amount of acid or base), give a general indication of how much of that substance is present in the liquid. The tests that give an exact number (such as a modern blood sugar meter) gives a more precise …
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