C-10
Interpreting Test Results
The recommendations below are intended to provide general guidance only. In all cases, it is
important to exercise clinical judgement in interpreting bile acid results in the context of the patient’s
history, clinical signs, physical status, and other laboratory data.
Preprandial Result
Postprandial Result
<12 µmol/L 12–25 µmol/L >25 µmol/L
<12 µmol/L
Normal; consistent
with sufficient
hepatic function
Retest at a later time
(days to weeks) if
liver dysfunction is
still suspected and
patient is anicteric
†
Consistent with
decreased hepatic
function
12–25 µmol/L
Retest at a later
time (days to
weeks) if liver
dysfunction is still
suspected and
patient is anicteric
†
Retest at a later time
(days to weeks) if
liver dysfunction is
still suspected and
patient is anicteric
†
Consistent with
decreased hepatic
function
>25 µmol/L
Decreased hepatic
function possible
Retest at a later
time (days to
weeks) if liver
dysfunction is still
suspected and
patient is anicteric
†
Inadequate fast
possible
Retest at a later time
(days to weeks) if
liver dysfunction is
still suspected and
patient is anicteric
†
Consistent with
decreased hepatic
function
†
Preprandial values will occasionally exceed postprandial values. This is usually attributed to spontaneous gall bladder contraction or
preprandial specimen obtained prior to a sufficient fast. When preprandial values exceed the postprandial values, always check that pre-
and postprandial samples are properly identified.
SNAP Test Procedures
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