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Alpha-1-Antitrypsin, Phenotyping

Item Value
Approval req'd? No
Available Stat? No
Test code ATPN
Test group Alpha-1-Antitrypsin
Performed by Quest
Sendout? Yes
Method Isoelectric focusing
Container type Red top or Gold top
Amount to Collect 2 mL blood
Sample type Serum
Preferred volume 1 mL serum
Min. Volume 0.1 mL serum
Processing notes Refrigerate. Order Quest Test # 853X Alpha-1-Antitrypsin Phenotyping
Normal range 90% of Normals are MM
Synonyms A1AT; A1-AT; Alpha-1-PI; Alpha-1-Protease inhibiitor; A1-Antitrypsin; A1-PI; A1-Protease inhibitor
Stability Room temperature 8 hours, refrigerated 1 week, frozen at -20C 1 month.
Turn around times Test set up 5x per week, turnaround 5-7 days
Additional information Most normal individuals have the M phenotype (M,M1, or M2). Over 99% of M phenotypes are genotypically MM. In the absence of family studies, the phenotype (M) and quantitative level can be used to infer the genotype MM.

The most common alleles associated with a quantitatave deficiency ate Z and S. The reports for the rare alleles will indicate whether or not they have been associated with reduced quantitative levels.
LOINC code 32769-2
Last Updated 10/2/2010 11:51:20 AM
Entry Number 69
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