CPT Code: 87535 Order Code: 16185 ABN Requirement: No Specimen: Preferred: EDTA plasma Alternative: Serum Volume: 1.6 mL Minimum Volume: 0.8 mL Container: Preferred: EDTA (Lavender Top) tube Alternative: Red Top Tube (No gel barrier) or Serum Separator Tube (SST, gel barrier) Collection Instructions: Label transport tube with specimen type. Specimen must be labeled with patient identifiers more »