I would ask why before scheduling. that seems strange that you are not told why the Dr wants biopsies, he should have done them the first time around.
I have not had an obstruction though so I am no expert. I do think you deserve to know, bad news or good news is better than no news to me.
Diagnosed w/ Crohn’s Disease March 2007 Started Humira June 2008 (have been on other cd meds)
Diagnosed w/ Fibromyalgia May 2007 on Soma and Lyrica
Diagnosed w/ General Anxiety Disorder in 2005- Effexor and Clonazepam