ARUP's Laboratory Test Directory

Helicobacter pylori Antibody, IgA : 0050995

Mnemonic: A PYLORI

Methodology: Semi-Quantitative Enzyme Immunoassay
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: Serum separator tube, lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).

Specimen Preparation: Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.1 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
1.7 EV or less: Negative - No significant level of IgA antibody to H. pylori detected.
1.8-2.2 EV: Equivocal - Repeat testing in 10-14 days may be helpful.
2.3 EV or greater: Positive - IgA antibody to H. pylori detected, suggestive of active infection.
Interpretive Data: Helicobacter pylori IgG and IgA antibody seroconversion occur together after 60 days. Samples that have a high titer of both IgG and IgA antibodies to H. pylori in symptomatic individuals may be considered to represent an active infection. However, a positive H. pylori IgA result can only suggest active infection and should be confirmed by bacterial isolation or other diagnostic testing.

For additional information, refer to Helicobacter pylori topic at arupconsult.com
CPT Code(s): 86677
Cross References: Camplyobacter (Helicobacter pylori Antibody, IgA)
 
 

 

 

 
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