<prompt> Investigation of choice for amoebic liver abscess: March 2012Demonstration of parasites in stoolSerum Entamoeba antibodiesAspiration of cyst fluidX-ray abdomen  <response>: Ans: B i.e. Serum Entamoeba antibodies Diagnosis of amoebic liver disease Analysis of serum for Entamoeba antibodies by immunoassay carries 99 sensitivity and more than 90 specificity, and is more accurate than stool analysis in amoebic liver disease Diagnosis may depend on cyst aspiration revealing the classic anchovy sauce appearance of the cyst fluid 