CAFFEINE Mnemonic CAFF Synonym Vivarine® Specimen Collection Requirements Collect Serum or Plasma, plain red or lavender (K2EDTA) Handling Separate from cells ASAP or within 6 hours of collection. Transfer 0.5 mL serum or plasma to an aliquot tube. Preferred Volume 0.5 mL Minimum Volume 0.2 mL Serum/Plasma (1.25 mL minimum whole blood draw) Transport Refrigerated (2-8°C) Rejection Criteria Citrated plasma, serum separator tube (SST) Stability AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 1 week; Refrigerated (2-8°C): 1 week; Frozen (at or below -20°C): 2 months Testing Information Performed Wed, Sat Reported 2-6 days Method Quantitative EMIT Immunoassay Referral Lab ARUP (2011603) Reference Values Reference Values Interpretation provided. CPT Codes 80155 Last Updated: Thursday, January 5, 2017 03:42:01 AM