title: Quality control in a radioimmunoassay: observations on the operation of a semi-automated assay for human placental lactogen.
mesh_terms: D001322:Autoanalysis; D004355:Drug Stability; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008722:Methods; D010928:Placental Lactogen / Q000097:blood*; D011247:Pregnancy; D011786:Quality Control; D011863:Radioimmunoassay; D012044:Regression Analysis; D013997:Time Factors
chemical_list: D010928:Placental Lactogen