Need for an external proficiency testing program for cytokines, chemokines, and plasma markers of immune activation.

Fahey JL, Aziz N, Spritzler J, Plaeger S, Nishanian P, Lathey JL, Seigel J, Landay AL, Kilarui R, Schmitz JL, White C, Wara DW, Akridge R, Cutili J, Douglas SD, Reuben J, Shearer WT, Nokta M, Polland R, Schooley R, Asthana D, Mizrachi Y, Waxdal M