Enzyme Linked Immunosorbent Assay (ELISA) -IgM<<Return to Search Results
Accredited by the Standards Council of Canada to Laboratory no. 594 (ISO/IEC 17025).
Detection of IgM antibodies to Leptospira spp. by ELISA.
Fresh human serum.
Minimum volume required is 0.25 mL.
Icteric, hyperlipaemic, haemolysed or contaminated sera may yield erroneous results.
Collect blood in serum separator tubes.
Transfer an aliquot of serum to a 1.5 mL screw-top vial with O-ring (Sarstedt vial). Store specimen refrigerated up to five days or store frozen until shipped for testing. Ship frozen on dry ice or with freezer packs.
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.
Symptoms of Leptospira spp. infection may include fever, headache, chills, severe malaise, skin rash, vomiting, diarrhea, myalgia, conjunctival suffusion, jaundice, kidney and/or liver failure, meningitis and chest pains. Contact with an infected animal (dogs, cattle, raccoons, rodents, etc.) or recent travel to locations known to be endemic for Leptospira spp.
Completed Requisition for Serological Testing for Selected Zoonotic Agents. If possible, include the clinical history and lab results performed at local or provincial laboratories.
Specimens may be subject to rejection if they are not the appropriate sample type, have insufficient volume or are not accompanied by relevant patient information or clinical history.
Commercial IgM ELISA kit. This is a qualitative test for the detection of IgM antibodies to Leptospira spp. in serum.
Samples, which are positive or equivocal by ELISA, are subject to confirmation by the Microagglutination test (MAT).
Initiation of antibiotic treatment prior to testing may result in decreased antibody production which will affect the outcome of serological testing.
As with any laboratory test, results of the test should be interpreted with consideration of all available laboratory and clinical findings.
21 calendar days (ELISA result only). Up to 30 calendar days if specimen requires further testing by MAT.
- Levett, P.N. Leptospirosis (2001) Clin. Micro. Rev. (14): 296-326.