ARUP's Laboratory Test Directory
| 0050250: Echinococcus Antibody, IgG, Serum by ELISA |
| Test Mnemonic: ECHINO | |
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Methodology: Enzyme-Linked Immunosorbent Assay
Performed: Mon, Thu Reported: 1-5 days |
| Specimen Required: | |
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Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.15 mL serum at 2-8°C. Remarks: Separate serum from cells ASAP. 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 acute specimens. Please mark specimens plainly as "acute" or "convalescent." Unacceptable Conditions: Severely lipemic or contaminated specimens. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
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| Reference Interval: |
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0.8 IV or less: Negative - No significant level of Echinococcus IgG antibody detected. 0.9-1.1 IV: Equivocal - Questionable presence of Echinococcus IgG antibody detected. Repeat testing in 10-14 days may be helpful. 1.2 IV or greater: Positive - Presence of IgG antibody to Echinococcus detected, suggestive of current or past infection. |
| Interpretive Data: | |
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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. Please refer to Statement D in the Compliance Statements section in the front of the Laboratory Test Directory. |
| CPT Code(s): | |
| 86682 |