2 - 3 days
Test Updated:
A-1 Antitrypsin Clearance
A-1 AT Clearance
A1AT Clearance
CA1A
ALPHA-1-ANTITRYPSIN CLEARANCE
A1A CONC
A1AT-S
CLEARANCE
ALPHA-1-ANTITRYPSIN CONCENTRAT
ALPHA-1-ANTITRYPSIN, SERUM
Alpha 1 Antitrypsin Clearance
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Test Overview
Nephelometry
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.
Specimen Requirements
Collect 24 hour stool sample and blood sample. Send entire stool collection. Draw serum sample during the stool collection period.
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.