English, 12.11.2019 23:31, derrishamckenzie22

Controls provide a standard of comparison for test results. each essay contains one or more controls. positive controls contain all the required substances and a positive result is expected. negative controls do not contain all the required substances and a negative result is expected. which of following is a positive control for an iki (lugol’s) test?

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Controls provide a standard of comparison for test results. each essay contains one or more controls...