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Test Code 7AC4 7AC4, Bile Acid Synthesis, Serum


Specimen Required


Patient Preparation:

1. Fasting: 12 hours, required; Fasting morning specimen is preferred.

2. Patient should not use:

 a. Statins for 5 days before specimen collection

 b. Bile acid sequestrants for 24 hours before specimen collection

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL Serum

Collection Instructions:

1. Centrifuge and aliquot serum into a plastic vial.

2. Send specimen frozen.


Specimen Type

Serum

Specimen Minimum Volume

Serum: 0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 90 days
  Refrigerated  72 hours
  Ambient  24 hours

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

≥18 years: 2.5-63.2 ng/mL

 

Reference values have not been established for patients who are younger than 18 years.

Day(s) Performed

Monday, Thursday

Report Available

5 days

Specimen Retention Time

14 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

82542