Certification of drugs of abuse in a human serum standard reference material: SRM 1959.
Tai
Susan S-C
SS
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. susan.tai@nist.gov
Prendergast
Jocelyn L
JL
Sniegoski
Lorna T
LT
Welch
Michael J
MJ
Phinney
Karen W
KW
Zhang
Nien Fan
NF