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Bile Acids, Fractionated And Total (4668X)
MessagePerformed at QNI
Test code 8482N, 4668X
Test code 8482N, 4668X
Test Code
BAF
Quest Code
8482N
Alias/See Also
BAF
4668X, 8482N
Bile Salts
4668X, 8482N
Bile Salts
CPT Codes
82542
Includes
Cholic Acid
Deoxycholic Acid
Chenodeoxycholic Acid
Total Bile Acids
Deoxycholic Acid
Chenodeoxycholic Acid
Total Bile Acids
Preferred Specimen
1 mL serum
Patient Preparation
Overnight fasting is preferred
Minimum Volume
0.2 mL
Instructions
Collect blood in a red top or SST tube. After clot formation centrifuge sample and pour off serum into a transport tube. Store sample refrigerated or frozen.
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: 14 days
Refrigerated: 21 days
Frozen: 30 days
Refrigerated: 21 days
Frozen: 30 days
Methodology
Chromatography/Mass Spectrometry
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Night 4 days a week
Report Available
Maximum lab time 6 days
Reference Range
Cholic Acid | ≤1.8 umol/L |
Deoxycholic Acid | ≤2.4 umol/L |
Chenodeoxycholic Acid | ≤3.1 umol/L |
Total Bile Acids | ≤6.8 umol/L |
Clinical Significance
Bile acids are formed in the liver, from cholesterol, stored and concentrated in the gallbladder, and excreted into the intestines in response to food. Elevated concentrations often suggest impaired hepatic clearance due to liver disease. Patients with intestinal malabsorption and metabolic disorders such as Gilbert's disease do not exhibit elevated bile acids concentrations.
Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130