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ALPHA 1-ANTITRYPSIN
Number 220
CPT Code 82103
Alias ALPHA 1-ANTITRYPSIN
Specimen Container SST
Specimen Type Serum
Turn Around Time
Days Performed
Reference Range 90-200 mg/dL
Alternate Specimen Red Top
Volume 1 mL Serum
Stability Ambient 14 Days
Stability Refrigerated 14 Days
Stability Frozen 14 Days
Patient Preparation
Overnight fasting is preferred.
Methodology
Immunologic
Limitations
α1AT may be elevated into normal range in heterozygous deficient patients during concurrent infection, pregnancy, estrogen therapy, steroid therapy, cancer, and during postoperative periods. Homozygous deficient patients will not show such elevation. Normal α1AT levels may occur in patients with liver disease who are heterozygotes. In normals, pregnancy and contraceptive medication may elevate levels. Levels are normally low at birth but rise soon thereafter.
Rejection Criteria
Chylous serum
Additional Instructions
Performing Laboratory Reference Laboratory
TagsPROTEASE, INHIBITOR