2115      Primidone [Includes Phenobarbital]
Specimen:
  Collect: One 10 mL Red Top

Also Acceptable
One 4 mL Green Top (Li Heparin) 
  Submit: 1 mL (Min:0.5 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable
1 mL (Min:0.5 mL) Plasma. Submit Refrigerated. Submit in a Standard Transport Tube. 
  Special Handling: Allow specimen to clot completely at room temperature
Separate from cells ASAP 
  Rejection Criteria: Use of separator tubes 
  Stability: Ambient: 1 Week(s); Refrigerated: 3 Week(s); Frozen: 6 Month(s); Incubated: Unacceptable 
Methodology: Enzyme Immunoassay (EIA); Immunoassay 
Performed: Sun-Sat 
Reported: 1-2 Day(s) 
CPT Codes:
80184 - TDM Phenobarbital80188 - TDM Primidone
Interpretive Data: Please see report for interpretive data.
Components:
2119 - PRIMIDONE2927 - LAST DOSE
2721 - PHENOBARBITAL