Which of these people is struggling with drug abuse? A.
Phil, who takes an over-the-counter medication once or twice a week to deal with joint pain
B.
Marjorie, who takes cocaine every day and has strong bouts of anxiety if she cannot
C.
Will, who takes insulin every day for his diabetes and cannot lead a normal life without it

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?