Diagnosis of a recent respiratory syncytial virus infection.
IgG: < 1:10; IgM: < 1:10. The presence of IgM class antibodies or a fourfold or greater rise in paired sera IgG titer indicates recent infection. The presence of demonstrable IgG generally indicates past exposure and immunity.
For low IgG antibody levels with no demonstrable IgM, it is recommended that a convalescnet sample be collected. Not useful for diagnosis from spinal fluid.
2 - 5 days
- RSV-RESP SYNCT VIR AB IGG, IGM
- RSV IGG
- RSV IGM
- RESP SYNCYTIAL VIRUS IGG
- RESP SYNCYTIAL VIRUS IGM
- RESPIRATORY SYNCT VIR AB
Collect blood in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Grossly contaminated specimens are unacceptable. The physician should arrange for the collection of the convalescent serum 10 to 14 days after collection of the acute serum specimen.
Test sent to Mayo Medical Laboratories.