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Bile Acids

Test ID: 


CPT code:



Glyco and Taurochenodeoxycholic Acid

Clinical Use:

Evaluate the enterohepatic cycle consisting of the biliary system, intestine, portal circulation, and hepatocytes

Specimen Type:

Serum, frozen

Requested Volume: 

1 mL

Minimum Volume: 

0.2 mL

Container Type: 

Red-top tube or gel-barrier tube

Patient Preparation: 

Patient should be fasting; however, a two-hour postprandial level has been used by various physicians in order to evaluate hepatic function after the gallbladder has been completely emptied (ie, challenge the liver with a high level of bile acids in the portal circulation).


Transfer serum to a plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions:


Stability Requirements:



Room temperature

1 day


3 days


7 days

Freeze/thaw cycles

Stable x3

Rejection Criteria

Specimen not transported and received refrigerated; plasma sample

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