2011043
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Alpha-1-Antitrypsin Clearance, Quantitative by ELISA, Timed Stool

A1ACLR
Example Reports
Elevated
Greater Than
Less Than
Normal

Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

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

Frozen.

Unacceptable Conditions

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

Remarks
Stability

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)

Methodology

Enzyme-Linked Immunosorbent Assay/Quantitative Immunoturbidimetry

Performed

Mon, Wed, Fri

Reported

1-3 days

Reference Interval

Test Number
 Components
 Reference Interval
  Alpha-1-Antitrypsin 90-200 mg/dL
  Alpha-1-Antitrypsin Stool, ELISA 0.00-0.50 mg/g
  Alpha-1-Antitrypsin Stool-Clearance 1 - 49 mL/day

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

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

N/A

CPT Codes

82103 x2

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Components

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.

Aliases

Alpha-1-Antitrypsin Clearance, Quantitative by ELISA, Timed Stool