CA1A - Specimen: Alpha-1-Antitrypsin Clearance, Feces and Serum

Test Catalog

Test Name

Test ID: CA1A    
Alpha-1-Antitrypsin Clearance, Feces and Serum

Specimen Type Describes the specimen type validated for testing


Necessary Information

Both feces and serum are required.

Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Blood must be drawn during the stool collection period.


Specimen Type: Serum

Collection Container/Tube: Red top or serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL


Specimen Type: Stool

Supplies: Stool Containers - 24, 48, 72 Hours Kit (T291)

Specimen Volume: Entire collection

Collection Instructions:

1. Collect a 24-hour stool collection.

2. If no specimen is obtained in 24 hours, extend collection to 48 to 72 hours. Note time frame.


If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request Form (T728) with the specimen (

Specimen Minimum Volume The amount of sample necessary to provide a clinically relevant result as determined by the Laboratory.

Homogenized Stool: 1 mL; Serum: 0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected


Feces: NA

Serum: Mild OK; Gross OK


Feces: NA

Serum: Mild OK; Gross OK


Feces: NA

Serum: Mild OK; Gross OK



Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperatures are also included.

Specimen TypeTemperatureTime
FecalFrozen (preferred)14 days
 Ambient 14 days
 Refrigerated 14 days
SerumFrozen (preferred)28 days
 Ambient 28 days
 Refrigerated 28 days