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Laboratory Test Directory

Alpha-1-Antitrypsin & Phenotype


Name Method Department Units
A-1-Antitrypsin and Phenotype Qualitative Isoelectric Focusing/Immunoturbidmetry
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Alpha-1-Antitrypsin, A1A Phenotype

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 1 mL

Red Tube (no anticoagulant) with Gel

3 mL 1 mL

Gold tube, (SST) with Gel

3.5 mL 1 mL

Room temperature - 1 week(s)
Refrigerated - 3 month(s)
Frozen - 3 month(s)

Specimen Preparation

  • Centrifuge within 2 hours, separate supernatant and freeze
  • Avoid repeated freeze/thaw cycles

Reasons for Rejection

  • Not removed from cells within time frame
  • Gross hemolysis


Includes alpha-1-antitrypsin. Interpret with caution if the patient has been transfused within the previous 21 days.

CPT Code

  • 82103
  • 82104