Bile Acid Diarrhea (BAD) marker, Bile Acid Synthesis surrogate
14 days
Tandem Mass Spectrometry (LC-MS/MS)
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Bile acid marker used in assessing bile acid diarrhea.
Serum or Plasma, Frozen
0.5 mL
Serum from a gel-barrier tube, Serum from red-top tube, Serum transfer tube, Plasma from lavender-top tube, Plasma from green-top tube, or Plasma transfer tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Serum/plasma must be separated from cells within two hours of venipuncture. Transfer serum/plasma to a plastic transport tube before freezing.
| Temperature | Period |
|---|---|
| Frozen | 9 days |