Useful For: Detecting the presence of IgG antibodies to T. solium in serum if clinical suspicion of cysticercosis exists.
Ordering Guidance: Parallel testing is preferred, and convalescent specimens must be received within 30 days from receipt of the acute specimen.
Code | Name |
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RCYSTA | Cysticercosis IgG Antibody |
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Interpretive Information:
<9 U Negative: | No significant level of cysticercosis IgG antibody detected. |
9-11 U Equivocal: | Recommended repeat testing in 2-4 weeks with fresh sample. |
>11 U Positive: | IgG antibody to cysticercosis detected, which may suggest current or past infection. |
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 cystercosis antibody, IgG by Western blot is recommended.
3 mL blood in GOLD SST or RED TOP tube
Outside Laboratories:
Stability: Refrigerated (Preferred): 2 weeks; Frozen: 1 month; Ambient: 48 hours. Avoid repeated freeze/thaw cycles.
Reject Due To: Hemolysis, lipemia, icterus, contaminated or heat-inactivated samples.
Centrifuge sample and transfer serum to a separate plastic vial. Refrigerate serum.
Sendouts:
Stability: Refrigerated (Preferred): 2 weeks; Frozen: 1 month; Ambient: 48 hours. Avoid repeated freeze/thaw cycles.
Reject Due To: Hemolysis, lipemia, icterus, contaminated or heat-inactivated samples.
Sendout |
ARUP Laboratories, Inc.
800-522-2787 500 Chipeta Way |
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