TY  - GEN
AU  - Beck,O
AU  - Lafolie,P
AU  - Hjemdahl,P
TI  - Modification of commercial assay kits is justified
SN  - 0009-9147
PY  - 1993///0707
KW  - Benzodiazepines
KW  - urine
KW  - Humans
KW  - Reagent Kits, Diagnostic
KW  - standards
N1  - Publication Type: Comment; Letter
ER  -