I am a home health nurse with a patient with a Mediport. She will need it (or some other type of vein access device) the rest of her life due to her condition. She is not always compliant with taking PO warfarin, so this may be part of the lab draw problem.
Twice now, I have drawn blood into a lavender top tube. Many hours later, the lab calls to say the specimen clotted. (It looked perfectly liquid to me when I dropped it off.)
These lab draws are always difficult. Her port does not give up blood easily. I tried using a smaller syringe (10 ml) to withdraw blood but the port started to clot! Any ideas?