Question 22 / 25:  The following is from a 5 yr old horse with history of anorexia and emaciation.

PCV: 43 (normal)

CK 830 (470 normal)

AST 350 (300 normal)

SDH 4 (normal)

ALP 710 (290 normal)

GGT 72 (17 normal)

Serum Bilirubin 10.5 (normal 2.1)

What is the most likely differential?

A  Anorexia
B  Acute muscle necrosis
C  Acute hepatocyte necrosis
D  Cholestasis
E  Hemolysis
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Explanation:

Yes, the horse is anorexic, but there is more evidence of other issues. Acute muscle necrosis- this would not effect bilirubin levels. Acute hepatocyte necrosis - the SDH is normal so this is not likely

Hemolysis- yes this is a differential for increased bilirubin but the PCV is normal.

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