INSULIN-LIKE GROWTH FACTOR BINDING PROTEIN-3 Mnemonic IGFBP3 Synonym IGF Binding Protein-3 - IGF-BP3 Specimen Collection Requirements Collect Serum or Plasma, one gold (SST) or lavender (EDTA) top tube Handling CRITICAL FROZEN. Separate serum from cells within 1 hour of collection. Store frozen in a plastic tube. Preferred Volume 1.0 mL Minimum Volume 0.5 mL Transport Frozen Stability Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 4 months Testing Information Performed Mon - Fri Reported 3-5 days Method Radioimmunoassay in Dilute Serum Referral Lab Esoterix (500281) Reference Values Reference Values Interpretation provided. CPT Codes 83519 Last Updated: Thursday, January 5, 2017 03:42:17 AM