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Test Name:
Echinococcus IgG Antibody

• SBMF No:
  44407
• Performance Lab Name:
  ARUP Laboratories
• Test Mnemonic:
  ECHINO
• ABN:
  Not required
• CPT Code:
  86682
• LOINC Code:
  9656-0
• Ref Lab Test No:
  0050250
• Spec Type:
  Serum
• Spec Container:
  Gold top (SST) or red top (serum) tube
• Pref Vol:
  1.0 mL
• Min Vol:
  0.15 mL
• Fasting:
  No
• Spec Collect:
  Routine venipuncture
  Parallel testing is preferred
  Label samples as: "acute" or "convalescent"
  Convalescent samples must be received within 30 days from receipt of acute samples
• Spec Process:
  Clot 30 minutes
  Promptly centrifuge 15 minutes
  Immediately transfer serum to separate plastic tube
• Spec Store Transport:
  Refrigerated
• Spec Stability:
  After separation from cells:
  48 hours room temperature (20-30°C)
  2 weeks refrigerated (2-8°C)
  1 year frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles
• Spec Reject:
  Severely lipemic or contaminated sample
• Methodology:
  Enzyme-Linked Immunosorbent Assay (ELISA)
• Clinical Significance:
  Refer to:
  
• Reference Range:
  

  Echinococcus Antibody, IgG
  0.235 OD or less: Negative - No significant level of Echinococcus IgG antibody detected
  0.236-0.299 OD: Equivocal - Questionable presence of Echinococcus IgG antibody detected. Repeat testing in 10-14 days may be helpful.
  0.300 OD 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.

• Day Run:
  Mon, Thu
• Time Reported:
  2-6 days
• Test Type:
  INFECTIOUS ANTIBODY