Cathflo Activase (Alteplase) Genentech(Health/Medications) cathflo.com Description: Official pharmaceutical site intended for US health professionals for this medication... used for restoration of function to central venous access devices. Cathflo.com is your source for information about blood clots (thrombotic occlusions) in central venous catheters (CVCs) and about Cathflo Activase (a thrombolytic agent). Cathflo Activase (Alteplase) from Genentech, Inc. Right for the patient, right for the clinic Specializes in: catheterbloodclotcentralvenousaccessdevicethrombotic...occlusionthrombolytic