Alpha-1-antitrypsin clearance, feces and serum-994

Test info

  
Alpha-1-antitrypsin clearance, feces and serum
  
994
  
LAB994
  
MSO
  
α-1-antitrypsin clearance, feces and serum α-1-antitrypsin, F&S
A1A
AAT (Alpha-1-Antitrypsin)
Alpha 1 Antitrypsin
  

Diagnosing protein-losing enteropathies

Specimen

  
Serum and Stool, 24 hr collection
  

Serum:

Gold serum separator (SST) tube

Stool:

Stool collection kit (Mayo)

  
Serum - 1.0 mL and 24 hour stool collection
  
Serum - 0.5 mL and 1.0 mL homogenized feces from a 24 hour collection
  

Serum:

Blood must be drawn during the stool collection period.

Immediatley following collection, mix sample by gently inverting 5 times


Feces:

  1. Collect a 24-hour fecal collection
  2. If no specimen is obtained within 24 hours, extend collection time to 48 to 72 hours
  3. Document time frame

  

Serum:

  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin sample within two (2) hours of specimen collection
  3. Transfer serum to a Screw cap transfer vial/tube (Mayo T914)
  4. Freeze

Stool:

  1. Freeze

 

 

 

  

Serum:

Screw cap transfer vial/tube (Mayo T914)

Stool:

Stool collection kit (Mayo)

  

Red serum vial/tube, 5 mL

  

Red:

  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Screw cap transfer vial/tube (Mayo T914), labelled as serum, within two (2) hours of sample collection
  
  • Duration of stool collection time
  

Serum
Frozen (preferred) - 28 days
Ambient - 28 days
Refrigerated - 28 days

 

Feces
Frozen (preferred) -14 days
Ambient - 14 days
Refrigerated - 14 days

Feces and serum should be shipped together. Specimens shipped separately may delay testing.

Performance

  
Mayo Clinic Laboratories (A1AFS): R-NX
  
Mo - Fr
  
1 - 2 days
  

Nephelometry

Clinical and Interpretive info

  


 

Clearance: ≤27 mL/24 hours
Fecal alpha-1-antitrypsin concentration: ≤54 mg/dL
Serum alpha-1-antitrypsin concentration: 100-190 mg/dL

Billing

  
82103 x 2

Tracking

  
08/01/2019
  
03/09/2023
  
03/01/2023