Endocrine array provides simultaneous detection of multiple hormones from a single patient sample. The array has been developed to detect the following hormones in human serum or plasma samples: cortisol (CORT), dehydroepiandrosterone-sulphate (DHEAs), 17αhydroxyprogesterone (17αOHP), and leptin (LEPT). Designed for research and development usage, the array can provide high quality, reliable results. Only a small sample volume is required, thus saving time while reducing patient discomfort. The technology is simple and straightforward as the biochips are ready to use, reducing preparation time and more importantly, time to result.