Echinococcus Antibody, IgG, Serum by Elisa


Sunquest Code:ECHAB  
Epic Code:LAB1234Epic Name:Echinococcus Antibody IgG bY ELISA
Methodology:Enzyme-linked immunosorbent assay
CPT Code:86682
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-5 days
Special Instructions:Parallel testing is preferred. Label samples as acute or convalescent. Convalescent specimens must be received within 30 days from receipt of the acute specimens.


Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:0.5 mL
Container:Red or gold (gel) (Red (no gel))
Causes for Rejection:Severe lipemia, plasma; contaminated specimens


Processing and Shipping

Specimen Processing:Separate serum from cells ASAP. Aliquot 1 mL, 0.15 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:2007220


Interpretive

Reference Range:
0.000-0.890 IV Negative: No significant level of Echinococcus IgG antibody detected.
0.900-1.109 IV Equivocal: Questionable presence of Echinococcus IgG antibody detected. Repeat testing in 10-14 days may be helpful.
1.210 IV or greater Positive: Presence of IgG antibody to Echinococcus detected, suggesting of current or past infection.
*IV = Index Value: Optical Density (OD) of the patient serum divided by the OD of the cut-off value.   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.  


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