Detection of IgM Antibodies Directed Towards Chikungunya Virus by ELISA<<Return to Laboratory
Serological detection of IgM antibodies directed towards Chikungunya virus by an Euroimmun Anti-Chikungunya Virus ELISA.
- Chikungunya fever
Serum. Minimum volume of 250 µl required.
2 mL screw cap tubes.
Store samples refrigerated or frozen until shipped for testing. Ship samples on a cold pack, or with wet or dry ice.
Shipping of specimens shall be done by a TDG certified individual in accordance with TDG regulations. For additional information regarding classification of specimens for the purposes of shipping, consult either Part 2 Appendix 3 of the TDG Regulations or section 3.6.2 of the IATA Dangerous Goods Regulations as applicable.
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Suspected chikungunya virus infection and relevant travel history.
Completed Viral Zoonoses requisition including sender laboratory name, address and telephone number. Patient name and / or identifier (specimen reference number), date of birth, test(s) requested, collection date of specimen, date of on-set of symptoms, type of specimen, and clinical and travel history of patient.
All CHIK diagnostic samples are tested by both IgM and IgG ELISA to increase the clinical sensitivity.
1. The detection of chikungunya IgG antibody in a single sera is indicative of past or present exposure to this agent. The presence of chikungunya specific IgM in a single serum sample is consistent with an acute infection to this agent and meets the criteria for a "probable case". However, a 4 fold rise or greater in neutralizing antibody titre, or an IgG or IgM seroconversion in paired sera, is required to document a "confirmed case" of infection with associated illness.
2. There is increasing evidence for IgM persistence in blood/serum for up to a year or more after arbovirus (Eg. members of the Flavivirus, alphavirus, and bunyavirus arthropod borne virus groups) exposure. Thus, detection of IgM by itself may not always be a confirmation of acute infection.
3. Isolation of an arbovirus, detection of specific antibody by plaque reduction neutralization assay or detection of nucleic acid by real-time RT-PCR in a clinical specimen would constitute firm evidence of viral association with illness and provide "confirmed case" status.
14 calendar days
- Johnson, A.J., Martin, D.A., Karabatsos, N., and Roehrig, J.T. Detection of anti-arboviral immunoglobulin G by using a monoclonal antibody-based capture enzyme-linked immunosorbent assay. J. Clin. Micro. 38; 1827-1831.