Inform your doctor if you are on any medications, have any allergies or underlying medical conditions before your Igf Binding Protein 3 (Igfbp-3) Serum Chemiluminescent Immunoassay Blood Serum. Your doctor will give specific instructions depending on your condition on how to prepare for Igf Binding Protein 3 (Igfbp-3) Serum Chemiluminescent Immunoassay Blood Serum.