Sorted By Test Name - Mayo Medical Laboratories

FBIU
90357
9880
FBAF
91701
BILEA
200039
> or =10 years: 22-29 mmol/L
Clinical References: Tietz Textbook of Clinical Chemistry, Edited by Burtis and Ashwood.
Philadelphia, PA, WB Saunders Company, 1999.
Bicarbonate, Urine
Reference Values:
Normally: None Detected.
Test Performed By: NMS Labs
3701 Welsh Road
PO Box 433A
Willow Grove, PA 19090-0437
Bielschowsky Stain
Reference Values:
The laboratory will provide a pathology consultation and stained slide.
Bile Acids, Fractionated and Total
Reference Values:
Cholic Acid 3.1 or less umol/L
Deoxycholic Acid 7.3 or less umol/L
Chenodeoxycholic Acid 9.9 or less umol/L
Total Bile Acids 4.5-19.2 umol/L
Test Performed By: Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690
Bile Acids, Total, Serum
Clinical Information: Bile acids are formed in the liver from cholesterol, conjugated primarily to
glycine and taurine, stored and concentrated in the gallbladder, and secreted into the intestine after the
ingestion of a meal. In the intestinal lumen, the bile acids serve to emulsify ingested fats and thereby
promote digestion. During the absorptive phase of digestion, approximately 90% of the bile acids are
reabsorbed. The efficiency of the hepatic clearance of bile acids from portal blood maintains serum
concentrations at low levels in normal persons. An elevated fasting level, due to impaired hepatic
clearance, is a sensitive indicator of liver disease. Following meals, serum bile acid levels have been
shown to increase only slightly in normal persons, but markedly in patients with various liver diseases,
including cirrhosis, hepatitis, cholestasis, portal-vein thrombosis, Budd-Chiari syndrome, cholangitis,
Wilson's disease, and hemochromatosis. No increase in bile acids will be noted in patients with intestinal
malabsorption. Metabolic hepatic disorders involving organic anions (eg, Gilbert's disease, Crigler-Najjar
syndrome, and Dubin-Johnson syndrome) do not cause abnormal serum bile acid concentrations.
Useful For: An aid in the evaluation of liver function Evaluation of liver function changes before the
formation of more advanced clinical signs of illness such as icterus An aid in the determination of hepatic
dysfunction as a result of chemical and environmental injury An indicator of hepatic histological
improvement in chronic hepatitis C patients responding to interferon treatment An indicator for
intrahepatic cholestasis of pregnancy
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