AKT-2345

AKT-2345

A 28-year-old gentleman has come to discuss his recent blood test results.

A few months previously he had a private health screening that showed an abnormality on his liver function tests. He was subsequently told to see his GP for further advice. You can see that a liver function test done at that time showed a bilirubin level of 41 µmol/L (normal 3-20) with the remainder of the liver function profile being within normal limits.

Prior to seeing you today a colleague has repeated the liver function with a few other tests. The results show a normal full blood count, renal function and thyroid function.

Repeat LFTs reveal:
Bilirubin 40 µmol/L
ALT 35 U/L
ALP 104 U/L
Conjugated bilirubin 7 μmol/L

He is well in himself and has no significant past medical history. General systems examination is normal.

What is the likely underlying diagnosis?