At the moment, there are lots of other ways that medical professionals can stop excessive bleeding. They can put pressure on a wound, seal it up with gel, give a patient a blood transfusion or a different sort of injection that uses nanoparticles to clog up the hole. One method even uses tiny sponges to clog up a wound. But for injuries where pressure doesn't work, many of the current solutions require specific storing conditions, are very expensive, or clot too weakly to completely stop the bleeding. PolySTAT, its creators say, is hardier both inside and outside the body. The researchers plan to test PolySTAT's effectiveness with organ damage and find other medical uses for polymers like this one.