Bloods
FBC (anaemia, bleeding, thrombocytopenia, high WCC), CRP (infection/inflammation), blood cultures (infection/inflammation)
U+Es (hyponatremia, other electrolyte disturbance),
LFTs (deranged, low Alb), clotting (deranged),
Fe studies (haemachromatosis), ceruloplasmin (Wilson's),
a1-antitrypsin (a1-antitrypsin deficiency)
Virology (HBV, HCV)
Immunology (AIH, PSC, PBS)
Malignancy screen (AFP)
Genetic tests (Wilson's, haemachromatosis, a1-antitrypsin)