allisonxjones05 allisonxjones05

24-09-2020
Biology

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What is the negative control and positive control in a presumptive blood test?

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avaadley avaadley

24-09-2020

Answer:

Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).

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