The High Sensitivity Human PTH (1-34) ELISA Kit is a two-site enzyme-linked immunosorbent assay (ELISA) for the measurement of Human PTH (1-34) in plasma or cell culture media. An affinity purified goat polyclonal antibody optimized to bind human PTH (1-34) is biotinylated for capture. Another affinity purified goat polyclonal antibody, specific to a different area of the human PTH (1-34) peptide, is conjugated with the enzyme horseradish peroxidase (HRP) for detection.