Trypanosoma cruzi IgG, purified antigen
Also known as: CHAGAS G
Use
This test aids in the diagnosis of non-acute (chronic phase) Chagas disease caused by Trypanosoma cruzi. It is designed to detect IgG antibodies to the parasite, which may indicate current or past infection. The test is important in identifying chronic Chagas disease and determining the need for further serologic testing as recommended by the CDC.
Special Instructions
This assay should not be used for blood donor screening or associated re-entry protocols, or for screening Human Cell and Cellular Tissue-Based Products (HCT/Ps). Parallel testing is recommended, and convalescent specimens must arrive within 30 days of acute specimens.
Limitations
According to the CDC, at least two different serologic tests should be used to diagnose chronic Chagas Disease, as no single serologic test is sufficiently sensitive and specific. If results are discrepant between assays, repeat testing or testing with a third method may be beneficial.
FDA ApprovedNew York Approved
Methodology
Immunoassay (ELISA)
Biomarkers
LOINC Codes
- 59387-1
Result Turnaround Time
1-6 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL
Container
ARUP Standard Transport Tube
Collection Instructions
Separate serum from cells within 2 hours of collection. Mark specimens as 'acute' or 'convalescent' if applicable.
Storage Instructions
Refrigerated. Also acceptable: Room temperature or frozen.
Causes for Rejection
Plasma. Bacterially contaminated, heat-inactivated, hemolyzed, icteric, lipemic, or turbid specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |