Test Overview
Test Methodology

Nephelometry

Test Usage

Elevated alpha-1 antitrypsin clearance suggests exessive gastrointestinal protein loss.

Reference Range *

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.

Test Details
Days Set Up
Monday - Saturday
Analytic Time

2 - 3 days

Soft Order Code
A1AFS
MiChart Code
Alpha-1 Antitrypsin, Clearance
Synonyms
  • 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
Laboratory
Sendout
Reference Laboratory
Mayo A1AFS
Section
Special Testing
Specimen Requirements
Collection Instructions

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.

Yellow Top Tube
Normal Volume
1 mL serum AND entire 24 hour stool collection
Minimum Volume
0.5 mL serum AND 1.0 ml stool
Additional Information

Test sent to Mayo Medical Laboratories.

Billing
CPT Code
82103
Fee Code
20063
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