Technique: 2 ml. (1 ml. Minimum) serum from 1 Red Top (No Additive) tube. Do not use SST gel barrier tubes. Separate serum within
2 hours of collection.
Technique: 2-8C
Sample Collection Instruction: Specify brief clinical & treatment history on the test requisition form. Trough: just before the next dose is due at steady state.
Peak:6-8 hours after dose
