A synthetic peptide for use as a blocking control in assays to test for specificity of HPDL antibody, Alternative Names: HPDL control peptide, HPDL antibody Blocking Peptide, Anti-HPDL Blocking Peptide, 4-hydroxyphenylpyruvate dioxygenase-like Blocking Peptide, 4-HPPD-L Blocking Peptide, GLOXD1 Blocking Peptide, MGC15668 Blocking Peptide, RP4-534D1.1 Blocking Peptide