Can your bilirubin be high if you have an ulcer?

Yes, with Gilbert's: In all likelihood, particularly if more than 85% of your total bilirubin is unconjugated (bilirubin molecule is not attached to a protein that allows it to "dissolve" in blood) you have gilbert's syndrome. This is present in 2% of americans, who present with episodic jaundice. Often such jaundice occurs at times of stress, fever, fasting. Associated with low gluconyl transferase enzyme levels.

Likely unrelated: Ulcers in the stomach or duodenum are rarely associated with high bilirubin. See this site for more info in peptic ulcer. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001255/.

Bilirubin: There should be no elevation related to peptic ulcer. I would be looking for other causes.