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 mL | Serum | SST (Gold) | Refrigerated | Separate 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 |
|---|---|
| Ambient | After separation from cells: 2 days |
| Refrigerated | After separation from cells: 2 weeks |
| Frozen | After 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 | Freetext | Negative: 0.000-0.890 IV- No significant level of Echinococcus IgG antibody detected. | 99 | Freetext | Equivocal (repeat in 10-14 days may be helpful): 0.900-1.109 IV - Questionable presence of Echinococcus IgG antibody detected. | 99 | Freetext | Positive (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.