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Test Code BAFS Bile Acids, Fractionated and Total, Serum

Additional Codes

MLAB: YBAFS

Powerchart: Bile Acids Fractionation

Epic: LAB3910 Bile Acids Fractionated + Total

MA Cerner: Bile Acids Fractionation.

Useful For

Measuring tauro- and glycol-conjugated and unconjugated bile acid constituents in serum

 

Monitoring patients receiving bile acid therapy, such as cholic acid, deoxycholic acid, or ursodeoxycholic acid

 

Aiding in the evaluation of liver function; evaluation of liver function changes before the formation of more advanced clinical signs of illness such as icterus

 

Determining hepatic dysfunction as a result of chemical and environmental injury

 

Indicating hepatic histological improvement in chronic hepatitis C patients responding to interferon treatment

 

Indicating intrahepatic cholestasis of pregnancy

Reporting Name

Bile Acids, Fractionated and Tot, S

Specimen Type

Serum


Advisory Information


This bile acid test is useful in diagnosing intrahepatic cholestasis of pregnancy.

 

Do not use this assay for the diagnosis of peroxisomal biogenesis disorders (see BAIPD / Bile Acids for Peroxisomal Disorders, Serum) or inborn errors of bile acid metabolism.



Specimen Required


Patient Preparation: Patient must be fasting for 12-14 hours.

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: See Bile Acid-Associated Tests Ordering Guide in Special Instructions.


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 90 days
  Ambient  90 days
  Frozen  90 days

Reject Due To

Hemolysis

Mild OK; Gross OK

Lipemia

Mild OK; Gross OK

Icterus

NA

Other

Nonfasting specimen or plasma

Reference Values

Analyte

Normal (nmol/mL)

Total Cholic Acid

≤5.00

Total Chenodeoxycholic Acid

≤6.00

Total Deoxycholic Acid

≤6.00

Total Ursodeoxycholic Acid

≤2.00

Total Bile Acids

≤19.00

 

 

 

 

 

 

 

Day(s) and Time(s) Performed

Monday through Friday; 8 a.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82542

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BAFS Bile Acids, Fractionated and Tot, S 43130-4

 

Result ID Test Result Name Result LOINC Value
35796 Total Cholic acid 30518-5
35797 Total Chenodeoxycholic acid 30519-3
35798 Total Deoxycholic acid 30520-1
35799 Total Ursodeoxycholic acid 55159-8
35800 Total bile acids In Process

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)