2) An 37 year old man presents with a history of diarrhea and intermittent bloody stools for over 5 years. He has recently developed pruritus. Labs include:

• 2) An 37 year old man presents with a history of diarrhea and intermittent bloody stools for over 5 years. He has recently developed pruritus. Labs include:

• LFTs:

• Total Protein 7.2 g/dl (6.7-8.6)

• Albumin 3.6 g/dl (4.1-5.3)

• T. Bili 8.2 mg/dl (.30-1.30)

• D Bili 2.4 mg/dl (.04-.38)

• AST 37 U/l (12-38)

• ALT 40 U/l (7-41)

• Alk Phos 422 U/l (33-96)

• The most likely test to yield a diagnosis is:

• Bone scan

• Anti-mitochondrial antibody

• Haptoglobin level

• Colonoscopy

• ACE level