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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:
For Outpatients, send specimen by courier STAT to Hospital lab. Serum must be separated from cells within 2 hours of collection. 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. histolytica 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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