The document lists various ELISA kits for detecting human proteins and their specifications. It provides the product codes, product names, detection ranges, sensitivity thresholds, and test methods for 16 different ELISA kits. All kits use a sandwich method to detect proteins within specific concentration ranges, with sensitivities down to 0.09 ng/mL. The kits can measure levels of proteins involved in thyroid function, cancer, growth factors, and cell signaling.