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HelpTest Code BAFS Bile Acids, Fractionated and Total, Serum
Specimen Type
SerumOrdering Guidance
This test is useful in diagnosing intrahepatic cholestasis of pregnancy and does not support the assessment of either peroxisomal biogenesis disorders or inborn errors of bile acid metabolism.
For diagnostic testing for peroxisomal biogenesis disorders, order BAIPD / Bile Acids for Peroxisomal Disorders, Serum.
Specimen Required
Patient Preparation: Patient must be fasting for 12 to 14 hours.
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 90 days | |
| Ambient | 90 days | ||
| Frozen | 90 days |
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
Reference Values
Total cholic acid: ≤5.00 nmol/mL
Total chenodeoxycholic acid: ≤6.00 nmol/mL
Total deoxycholic acid: ≤6.00 nmol/mL
Total ursodeoxycholic acid: ≤2.00 nmol/mL
Total bile acids: ≤19.00 nmol/mL
Day(s) Performed
Monday through Friday
Report Available
3 to 5 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
82542
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Special Instructions
Testing Algorithm
For more information see Bile Acid-Associated Tests Ordering Guide
Forms
If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request (T728) with the specimen.