Cysticercus IgG Ab, Serum
Test Mnemonic
CYSGBL
CPT Codes
- 86682 - QTY (1)
LOINC ®
25389-8
Aliases
- Cysticercosis
- Taenia Solium Antibody, Serum
- Taenia-Cysticercus, Serum
Performing Laboratory
ARUP
FDA Category
In Vitro Diagnostic
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated | Label specimen as acute or convalescent. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | After separation from cells: 2 weeks |
| Frozen | After separation from cells: 1 month (Avoid repeated freeze/thaw cycles) |
| Ambient | After separation from cells: 48 hours |
Days Performed
Sat
Turnaround Time
2 - 9 days
Methodology
| Name | Description |
|---|---|
| Enzyme-Linked Immunosorbent Assay (ELISA) |
Reference Range
| Cysticercus IgG Ab, Serum | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| < 9 U: Negative - No significant level of cysticercosis IgG antibody detected. | 9 - 11 U: Equivocal - Recommend repeat testing in 2-4 weeks with fresh sample. | > 11 U: Positive - IgG antibodies to cysticercosis detected, which may suggest current or past infection. |
Special Info
Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Label specimens plainly as 'acute' or 'convalescent.' Cerebrospinal fluid (CSF) is unacceptable. Contaminated, heat-inactivated, hemolyzed, icteric, or lipemic specimens will be rejected. This test is New York DOH approved.
Clinical Info
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. Patients with collagen vascular diseases, hepatic cirrhosis, schistosomiasis, and other parasitic infections can produce false positive results. There is a strong cross-reaction between cysticercosis and echinococcosis positive sera. Confirmation of positive ELISA results by the cysticercous antibody, IgG by Western Blot is recommended.