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Alpha-1-Antitrypsin (Faeces)

Alias: Faecal A1AT, Faecal AAT

Discipline: Clinical Chemistry

Test information: Investigation of suspected Protein Losing Enteropathy (PLE), where serum proteins are lost into the gut. As Alpha-1-Antitrypsin a protease inhibit and so resistant to degradation by proteases in the gut, it is used in the assessment of PLE. GI bleeding may give false positive results, false negative results usually from protein degradation due to incorrect collection or storage, or Alpha-1-Antitrypsin deficiency.

Specimen Type(s)
  • Faeces;
Other Acceptable Specimen Type(s)
Specimen Container - Adult
  • Blue Top Container (Fecon);
Specimen Container - Paediatric
  • Blue Top Container (Fecon);
  • N/A;
Part of a test profile?
Volume (min) of sample to be sent to laboratory
Patient Preparation, Sample Handling and Transport
Fresh sample sent urgently to the laboratory to freeze.
Maximum add on time
No add-ons.
Units and Reference Ranges / Interpretation
Please see the report.
UKAS number
UKAS accredited test?

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Last updated: 14-06-2023