Entamoeba histolytica, IgG

Infectious Disease Laboratories:Immunology

Test ID/Workstation: EHIST CLEVE

Specimen Type: Blood

Tube Type: Gold top SST (serum separator tube, no anticoagulant)

Collection Volume: 2.5 mL (minimum 0.5 mL)

Cause for rejection: Contaminated, heat inactivated or severely lipemic specimens.

Storage: Refrigerated

Availability: Sent to reference lab

Methodology: Enzyme-Linked Immunosorbent Assay (ELISA)

Special Instructions: Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens.

Lab/Phone: 330-543-8418

TAT: 3-7 days

Additional Info: Clinical information: Aid in the detection of amebic liver abscess. Test is not useful for intestinal infection. In case of extra-intestinal complications, a positive antibody can indicate amebiasis even though stool findings are negative. Seroconversion between acute and convalescent sera is considered strong evidence of recent infection.

Reference Range:
Negative: No significant level of detectable E. histoytica IgG Antibody: 8 U or less.
Equivocal: (repeat testing in 10-14 days may be helpful) 9-11 U
Positive: (current or past infection) 12 U or greater

CPT Code: 86753

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