**6.2 Low molecular weight heparin**

LMWH is another type of heparin occasionally used for CRRT. It has a similar mechanism of action to UFH, but comparatively holds a lower affinity to antithrombin III. As a result, they have a more predictable anticoagulant effect. As such, LMWH does not require monitoring of clotting function, and dosing is usually based on the patient's weight.
