| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
St. Louis Encephalitis Virus IgM Ab, IFA (Serum)
Test Code24352
CPT Codes
86653
Preferred Specimen
1 mL serum
Minimum Volume
0.1 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Gross lipemia • Gross icterus
Methodology
Indirect Immunofluorescence Assay
Setup Schedule
Set up: Mon-Fri; Report available: 3 days
Reference Range
<1:16
Clinical Significance
IgG titers ≥ 1:16 are suggestive of exposure while the presence of IgM indicates recent infection. Human infections are seasonal, from mid- to late-summer, occurring throughout the southern, southwestern, and west central states. Strong cross-reactivity may be seen with other Group B Arboviruses (Flavivirus) including Dengue, Japanese Encephalitis, Rio Bravo, Powassan, and Yellow Fever.
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |
