TABLE 1.

Confirmatory test results on study blood donor from the National Reference Centre for Parasitology (Montreal, Quebec), Blood Systems Laboratories^† and Quest Diagnostics^‡

Test	Result
ELISA (inhouse, TESA antigens)	Positive
Immunoblot (inhouse, TESA antigens)	Positive
Inhouse polymerase chain reaction assay using Trypanosoma cruzi primers*	Negative
Ortho Trypanosoma cruzi ELISA†	Positive
Radioimmunoprecipitation assay‡	Positive

^*Trypanosoma cruzi infection of squirrel monkeys: comparison of blood smear examination, commercial ELISA and polymerase chain reaction analysis as screening tests for evaluation of monkey-related injuries (18);

^†Blood Systems Laboratories (Scottsdale, Arizona, USA);

^‡Quest Diagnostics (Virginia, USA). TESA Trypomastigote excreted/secreted antigens