Echinococcus Antibody, IgG
Ordering Recommendation
Adjunct to other diagnostic tests (eg, imaging) for echinococcosis. Patient's travel history is necessary to aid in test interpretation.
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA)
Performed
Mon, Thu
Reported
1-5 days
New York DOH Approval Status
Specimen Required
Serum separator tube (SST) or plain red.
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP standard transport tube. (Min: 0.15 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Mark specimens plainly as acute or convalescent.
Preferred transport temp: Refrigerated. Also acceptable: Frozen
Contaminated, heat-inactivated, grossly hemolyzed, or severely lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month (avoid repeated freeze/thaw cycles)
Reference Interval
Test Number |
Components |
Reference Interval |
---|---|---|
Echinococcus Antibody IgG | 8 U or less |
Interpretive Data
Patients with collagen vascular diseases, hepatic cirrhosis, schistosomiasis, and other parasitic infections can produce false-positive results. There is a strong cross-reaction between echinococcosis- and cysticercosis-positive sera.
Seroconversion between acute and convalescent sera is considered strong evidence of recent infection. The best evidence for infection is a significant change on two appropriately timed specimens where both tests are done in the same laboratory at the same time.
Component |
Interpretation |
---|---|
Echinococcus Antibody IgG | 0-8 U........................Negative: No significant level of Echinococcus IgG antibodies detected. 9-11 U......................Equivocal: Recommend repeat testing in 2-4 weeks with fresh sample. 12 U or greater.........Positive: IgG antibodies to Echinococcus detected, indicating current or past infection. |
FDA
Note
Hotline History
Hotline History
CPT Codes
86682
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
2007221 | Echinococcus Antibody IgG | 9656-0 |
Aliases
- Echinococcosis
- Hydatic disease
- Hydatiosis
- Tapeworm