91120 Helicobacter Pylori Antibody, IgA

Specimen:

Collect:

One 7.5 mL SST

Also Acceptable
One 4 mL Lavender (EDTA)
One 4 mL Green Top (Li Heparin)

Submit:

0.5 mL (Min:0.3 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable
0.5 mL (Min:0.3 mL) Plasma. Submit Refrigerated. Submit in a Standard Transport Tube.

Special Handling:

Avoid Repeated Freeze/Thaw Cycles
Separate from cells ASAP

Rejection Criteria:

Grossly Lipemic Samples
Hemolyzed specimens

Stability:

Ambient: 2 Day(s); Refrigerated: 2 Week(s); Frozen: 12 Month(s); Incubated: Unacceptable

Methodology:

Enzyme Immunoassay (EIA)

Performed:

Sun-Sat

Reported:

2-3 Day(s)

CPT Codes:

86677

Interpretive Data:


<1.8 EV: Negative. No significant level of IgA antibody to H. pylori detected 1.8-2.2 EV: Equivocal - Repeat testing in 10-14 days in parallel with first sample may be helpful >2.2 EV: Positive - IgA antibody to H. pylori detected, suggestive of active infection 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 patients 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 other diagnostic testing.