Provided are a wide concentration range, especially high concentration, substantially salt-free anti-prolactin receptor antibody formulations that are substantially isosmotic and of low viscosity.本發明提供一種廣濃度範圍(尤其是高濃度)且實質不含鹽的抗-泌乳素受器抗體配方,且該抗-泌乳素受器抗體配方為實質等滲透性且低黏度。