Human T-Cell Lymphotropic Virus Types I and II (HTLV-I/-II) Antibody Confirmation, Serum
Use
Confirmatory detection of human T-cell lymphotropic virus types I and II (HTLV-I and HTLV-II)-specific IgG antibodies in human serum specimens that are consistently reactive by initial screening tests. Differentiating between HTLV-I- and HTLV-II-specific IgG antibodies. HTLV-I infection can lead to adult T-cell leukemia and a chronic neurological disease, while HTLV-II has been associated with neurodegenerative disorders. Accurate diagnosis requires confirmation of initially screening test-reactive results.
Special Instructions
This confirmatory assay should be ordered only on serum specimens that are consistently reactive by an antihuman T-cell lymphotropic virus I and II (anti-HTLV-I/-II) screening immunoassay. For an evaluation that includes screening and confirmation, order HTLVI / Human T-Cell Lymphotropic Virus Types I and II Antibody Screen with Confirmation, Serum. If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.
Limitations
A negative line immunoassay result does not preclude the possibility of exposure to human T-cell lymphotropic virus types I and II. Results from this confirmatory assay should always be interpreted together with the reactive screening test result on a given specimen. Indeterminate confirmatory results do not clearly differentiate HTLV-I from HTLV-II infection and might require further testing.
New York Approved
Methodology
Immunoassay (Line Immunoassay (LIA))
Biomarkers
LOINC Codes
- 55162-2
- 22362-8
- 61112-9
- 77744-1
Result Turnaround Time
2-15 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.2 mL
Container
Plastic vial
Collection Instructions
Centrifuge blood collection tube per collection tube manufacturer's instructions (e.g., centrifuge and aliquot within 2 hours of collection for BD Vacutainer tubes). Aliquot serum into plastic vial.
Causes for Rejection
Gross hemolysis, gross lipemia, gross icterus are acceptable
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 7 days |