An Analyst Collects Hair from a Victim of a Drug

Multiple Choice

An analyst collects hair from a victim of a drug faciliated sexual assault. After cleaning, they cut it into 0.5cm segments and analyze these segments and find flunitrazepam at measurable concentrations. When the data is plotted as drug concentration on the y-axis and concentration on the x-axis, the points form a roughly linear pattern sloping downward. The indicates that

A) the dose was relatively recent
B) the dose was several days or weeks in the past
C) the dose has not yet undergone metabolism
D) the drug does not metabolize
E) none of the above