This Protein A purified antibody is suitable for ELISA and western blotting of human NAG-1 protein. For detection of NAG-1 in human serum, a sandwich ELISA is suggested using this antibody in combination with anti-NAG-1/GDF15 (N-terminal), H variant or D variant specific antibodies. Specific conditions for reactivity should be optimized by the end user. Expect bands in Western blots of native protein of approximately 13 and 26 kDa in size corresponding to NAG-1 monomer and dimer, respectively, using the appropriate cell lysate or extract.