Echinococcus Ab, IgG




Test Mnemonic

ECHINO

CPT Codes

  • 86682 - QTY (1)

LOINC ®

9656-0

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLSerumSST (Gold) RefrigeratedSeparate serum from cells ASAP or within 2 hours of collection and transfer serum to standard aliquot tube. 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."

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.15 mL     

Stability

Environmental Condition Description
AmbientAfter separation from cells: 2 days
RefrigeratedAfter separation from cells: 2 weeks
FrozenAfter separation from cells: 1 year (Avoid repeated freeze/thaw cycles)

Days Performed

Mon, Thu

Turnaround Time

2 - 6 days

Methodology

Name Description
Enzyme-Linked Immunosorbent Assay (ELISA) 

Reference Range

Echinococcus Ab, IgG
Sex Age From Age To Type Range Range Unit
    99  FreetextNegative: 0.000-0.890 IV- No significant level of Echinococcus IgG antibody detected. 
    99  FreetextEquivocal (repeat in 10-14 days may be helpful): 0.900-1.109 IV - Questionable presence of Echinococcus IgG antibody detected. 
    99  FreetextPositive (current or past infection): 1.210 IV or greater - Presence of IgG antibody to Echinococcus detected. 

Special Info

Contaminated or severely lipemic specimens are unacceptable. This test is New York DOH approved.

Clinical Info

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