Image 1 of 1 RBP4 Calibrators $132.28 SIZE5 x 1 mL Quantity: Add To Cart Added! SIZE5 x 1 mL You Might Also Like β2-microglobulin (B2M) Controls $79.36 Hemoglobin A1c (HbA1C) Control $158.73 RBP4 Controls $79.36 Cystatin C (CysC) Calibrators $132.28 High Sensitivity CRP (hs-CRP) Calibrators $132.28