Provided herein are kits comprised of a first container including a solution of fibrinogen-containing component that includes fibrinogen at a concentration range of about 5 mg/ml to about 30 mg/ml, and having a total protein concentration range of about 15 mg/ml to about 40 mg/ml; and a second container that includes a solution of thrombin-containing component. Further provided are mixtures comprised of fibrinogen and thrombin, calcium ions, and albumin, the mixture being comprised of total protein in a range of about 2.5 mg/ml to about 30 mg/ml, fibrinogen in a range of about 50% to about 80% of total protein, and albumin in a range of more than 0.65 mg/ml to about 3 mg/ml. Further provided herein are methods for preventing or reducing tissue adhesion, and hydrogel materials made of fibrin.