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Test Code ECHN Echinococcus Antibody, IgG

Clinical Indications

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

Additional Test Codes

Epic Order Name: ECHINOCOCCOSIS AB IGG (aka ECHN)
Sunquest Order Code: ECHN
Epic Px Code: LAB2195

Specimen Collection Type

Preferred: Gold
Acceptable: Red

Minimum Collection Volume

0.15 mL

Reference Range

Reference Value

Interpretation

 

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.

Critical Value

n/a

Interpretation

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.

Rejection Criteria

Contaminated or severely lipemic specimens.

Specimen Availability for Add-on Testing

2 Days

Specimen Stability

Refrigerated (preferred): 2 weeks
Ambient: 48 hours
Frozen: 1 year

Day(s) Performed

Mon, Thu

Performing Lab - Department

TUKHS-BH-Mail Outs

CPT Code

86682

LOINC Code

9656-0

Test Alias

Echinococcus IgG Antibody
Hydatid Disease
Tapeworm IgG Ab

Additional Information / Notes

N/A