the Marquis test was used on a sample suspected to contain amphetamine in a “field” sample, so the sample is likely impure. The resulting color was noted as orange by the test operator . (A) Identify a suitable negative control for this test. (B) Identify a suitable positive control. (C) What properties of the sample can introduce uncertainty in the color determination? (D) How can inter-operator error be reduced in reporting the results of a test like this?

the Marquis test was used on a sample suspected to contain amphetamine in a “field” sample, so the sample is likely impure. The resulting color was noted as orange by the test operator . (A) Identify a suitable negative control for this test. (B) Identify a suitable positive control. (C) What properties of the sample can introduce uncertainty in the color determination? (D) How can inter-operator error be reduced in reporting the results of a test like this?

Principles Of Radiographic Imaging: An Art And A Science

6th Edition

ISBN:9781337711067

Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac

Publisher:Richard R. Carlton, Arlene M. Adler, Vesna Balac

Chapter23: Technical Considerations In Digital Imaging

Section: Chapter Questions

Problem 8RQ

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