2 - 3 days
A-1 Antitrypsin Clearance
A-1 AT Clearance
Alpha 1 Antitrypsin Clearance
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Elevated alpha-1 antitrypsin clearance suggests exessive gastrointestinal protein loss.
Clearance: < or = 27 mL/24 hours; Fecal Concentration: < or = 54 mg/dl; Serum: 100 - 190 mg/dl.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect 24 hour stool sample. Freeze. Send entire stool collection. Collect blood in SST or red top tube. Aliquot serum into a plastic vial and freeze. Draw serum sample during the stool collection period.