HELICOBACTER PYLORI ANTIBODIES IgG & IgA

Mnemonic

HPAB

Specimen Collection Requirements

Collect

Serum separator tube, lavender (EDTA), pink (K2EDTA), or green (sodium or lithium heparin).

Handling

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)

Preferred Volume

0.5 mL

Minimum Volume

0.1 mL

Transport

Refrigerated.

Rejection Criteria

Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.

Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Testing Information

Performed

Sun-Sat

Method

Semi-Quantitative Enzyme Immunoassay

Referral Lab

ARUP (50994) IgA; Legacy Laboratory Services IgG

Reference Values

Reference Values

Helicobacter pylori IgG Antibody: 0.0-20.0 units: Negative - No significant level of IgG antibody to H. pylori detected. 20.1-24.9 units: Equivocal - Repeat testing in 10-14 days in parallel may be helpful. =>25.0 units: Positive - IgG antibody to H. pylori detected. Helicobacter pylori IgA Antibody: IgA 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.

CPT Codes

86677 H. pylori IgG; 86677 H. pylori IgA

Last Updated: Thursday, January 5, 2017 03:42:13 AM