CPT Code: 84443 Order Code: 90896 ABN Requirement: No Specimen: Serum Volume: 1.0 mL Minimum Volume: 0.7 mL Container: Gel-barrier tube (SST) Collection: Collect and label sample according to standard protocols. Gently invert tube 5 times immediately after draw. DO NOT SHAKE. Allow blood to clot 30 minutes. Centrifuge for 10 minutes. Special Instructions: Specimen collection after fluorescein dye angiography more »