CARBAMAZEPINE Mnemonic TEGR Synonym Tegretol® Specimen Collection Requirements Collect Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red or 3.0 mL mint green (lithium heparin, PST) top tube. Recommended Collection Times: Before next dose or for peak: 2-3 hours post dose Handling Allow serum to clot completely at room temperature (minimum: 30 minutes). Centrifuge and separate serum or plasma from cells ASAP. Preferred Volume 1.0 mL Minimum Volume 0.5 mL Transport Refrigerated (2-8°C) Rejection Criteria Grossly hemolyzed specimens Stability AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 5 days; Refrigerated (2-8°C): 5 days; Frozen (at or below -20°C): 6 months Testing Information Performed 7 days/week Method Enzymatic Immunoassay Referral Lab Samaritan Health Services Laboratories Reference Values Therapeutic Range Single Drug Regimen: 6-12 µg/mL Toxic Levels Single Drug Regimen: 20 µg/mL CPT Codes 80156 Last Updated: Thursday, January 5, 2017 03:42:01 AM