Ordering Recommendation

Adjunct to other diagnostic tests (eg, imaging) for echinococcosis. Patient's travel history is necessary to aid in test interpretation.

Mnemonic
ECHINO IGG
Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay

Performed

Mon, Thu

Reported

1-5 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Serum separator tube (SST).

Specimen Preparation

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.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Contaminated or severely lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval
0.0-0.8 IV 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

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.

No compliance statements are in use for this test.

Note
Hotline History
N/A
CPT Codes

86682

Components
Component Test Code* Component Chart Name LOINC
2007221 Echinococcus Antibody IgG 9656-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Echinococcus IgG Antibody
  • Hydatid Disease
  • IgG Ab
  • Tapeworm IgG Ab
Echinococcus Antibody, IgG