PSA
2-step immunoassay using CMIA(Chemiluminescent Microparticle Immunoassay)
0.5 ml
Serum
None
routine venipuncture
plastic tube
Unformed stool specimens are stable at 2-30°C for 2 days, at 2-8°C for 7 days, and at -20C for 60 days. Specimens mixed with the cobas PCR media are stable at 2-8C for 60 days or at 30C for 7 days before testing
ISR:<1.0=Negative (no detectable antibody). >1.0=Positive-(presence of detectable IgM antibody) 0.90-1.10=repeat test in duplicate to verify results
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