Promptly centrifuge and separate Serum or Plasma into a plastic screw capped vial using approved guidelines. Freeze at -70 C upon collection and ship on dry ice. Ship overnight Monday through Thursday, to arrive at NMS Labs the following day.
Plastic container (preservative-free)
Glass container. Polymer gel separation tube (SST or PST).
Rejection criteria pertain to clinical sample submissions only.
Room Temperature: Undetermined
Refrigerated: Undetermined
Frozen (-20 °C): Not Stable
Frozen (-70 °C): 14 day(s)
Disulfiram is rapidly and completely reduced to diethyldithiocarbamate (DEDTC) in blood within 4 minutes of addition to human blood or plasma. DEDTC, an excellent chelator of numerous metal ions, has an in vitro half-life of approximately 70 minutes in either human blood or plasma at room temperature, but nonenzymatically degraded (especially in an acid medium) to carbon disulfide and diethylamine.
It is required that specimens be frozen at -70°C immediately after being drawn and kept frozen. If the specimens are not kept frozen, this may cause lower or negative result values.