csf leaks after opituitary surgery

Is there a way to tell the difference between expected discharge and CSF leaks after a transphenoidal removal of a microadema pituitary tumour. I seem to have a regular amount of almost clear (pinkish, thin/ watery) discharge which is continuing after the bleeding has stopped and the viscous stuff is diminishing.

[Daniel M Prevedello, MD]

One can test the fluid for beta-2 transferrin. If it is positive it is csf.
If it is copious, watery, and after transphenoidal surgery, one should consider it csf leak until proven otherwise.