ARUP's Laboratory Test Directory

Echinococcus Antibody, IgG, Serum by ELISA : 0050250

Mnemonic: ECHINO

Methodology: Enzyme-Linked Immunosorbent Assay
Performed: Mon, Thu
Reported: 1-5 days
Specimen Required: Collect:  One 4 mL serum separator tube.

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)
Reference Interval:
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: 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 
 
 

 

 

 
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