Figure 1: (a) Kit 1 showing negative result due to "hook effect". Kit 2 showing weak positivity after 1:10 dilution and on increasing the dilution up to 1:100, the kit 3 was strongly positive; (b) Histologic section of a complete hydatidiform mole stained with hematoxylin and eosin (×400). Villi of different sizes are present. The villous in the center exhibiting fluid filled cistern bordered by diffuse trophoblastic proliferation