**3.4 Investigations**

The issue with eosinophilic cholangitis is that it mimics malignancy very closely so what are the options that we have that can help differentiate it from cancer?

Normal routine labs, taking into account the presenting symptoms should be done.

	- Bilirubin (total and direct) may be elevated.
	- ALT and AST may or may not be increased.

Again, looking at the laboratory investigation, it is still hard to pinpoint the diagnosis, the next step would be to move on into imaging modalities.
