Ordering Recommendation

Enzyme-Linked Immunosorbent Assay/Quantitative Immunoturbidimetry


Mon, Wed, Fri


1-3 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation

Stool: Entire 24-, 48-, or 72-hour stool collection. Refrigerate during collection. Provide patient a Timed Stool Collection Kit (ARUP supply #44192). Available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787.
AND Serum: Serum separator tube (SST) or Plasma: Plasma separation tube (PST). Also acceptable: Lavender (EDTA) or pink (K2EDTA).

Specimen Preparation

Stool: Refer to instructions in Stool Collection-Timed Specimens (24, 48, 72 Hours) under Specimen Handling at https://www.aruplab.com. Submit entire stool collection in an ARUP approved transport container(s) provided in kit using additional containers as needed for the full collection (available separately, ARUP supply #28077). (Min: 5 g)
Serum or Plasma: Collect blood during the stool collection time interval. Allow serum to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 0.5 mL to an ARUP Standard Transport Tube. (Min: 0.2 mL)

Storage/Transport Temperature


Unacceptable Conditions

Stool: Specimens in media or preservatives. Serum or Plasma: Hemolyzed.


Stool: Ambient: 24 hours; Refrigerated: 7 days; Frozen: 3 months
Serum or Plasma: Ambient: 1 week; Refrigerated: 3 months; Frozen: 3 months (avoid freeze/thaw cycles)

Reference Interval
Test Number
Reference Interval
  Alpha-1-Antitrypsin Stool-Clearance 1 - 49 mL/24h
2011041 Alpha-1-Antitrypsin, Quantitative by ELISA, Random Stool 0.00 - 0.50 mg/g
0050001 Alpha-1-Antitrypsin Effective November 17, 2014
90-200 mg/dL

Interpretive Data

Compliance Category

Laboratory Developed Test (LDT)


If serum or plasma specimen is not submitted in conjunction with a timed stool collection, order Alpha-1-Antitrypsin, Quantitative by ELISA, Random Stool (ARUP test code 2011041).

Hotline History
CPT Codes

82103 x2

Component Test Code* Component Chart Name LOINC
0050001 Alpha-1-Antitrypsin 1825-9
2011042 Alpha-1-Antitrypsin Stool, ELISA 25303-9
2011044 Alpha-1-Antitrypsin Stool, ELISA-Time 13363-7
2011045 Alpha-1-Antitrypsin Stool, ELISA-Weight 30078-0
2011047 Alpha-1-Antitrypsin Stool-Clearance 18271-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Alpha-1-Antitrypsin Clearance, Quantitative by ELISA, Timed Stool