The principal methods of diagnosis of bovine brucellosis are culture, the complement fixation test, serum agglutination test, Rose-Bengal test (RBT), indirect enzyme-linked immunosorbent assay and more recently the competitive ELISA (cELISA) and the fluorescent polarisation assay.
Complement fixation tests for serum antibodies to M. capripneumoniae [ 23] at arrival and 1 month before the start of the experiment, were negative in all goats (titers ≤ 1/16 at both occasions).
Hemolytic and strongly contaminated samples are also considered inadequate for the complement fixation test and serum agglutination test [ 35], and decreased sensitivity due to hemolysis was observed when testing samples of wildcats with an immunofluorescence assay [ 36] and fallow deer sera with an ELISA [ 37].
The patient's serum complement fixation (CF) titre was 1 16, and a serum coccidioidal immunodiffusion test for IgG antibody was negative.
For the women referred late in the course of their flu, diagnosis of influenza was conducted retrospectively using serum complement fixation testing.
Results for coccidioidal antibody testing were positive by enzyme immunoassay and immunodiffusion but negative by serum complement fixation.
Serology is especially useful in documenting asymptomatic infections, but is not useful for patient management because a ≥ 4-fold rise in complement fixation antibody titre in serum samples collected 2 weeks apart is necessary to make the diagnosis of influenza A infection.
Epstein-Barr virus (EBV) has been isolated from lung tissue of patients with IPF and scleroderma-associated fibrosis [ 37] and serum complement fixation titers of cytomegalovirus (CMV) were elevated in IPF and CTD-IPs [ 38], whereas human herpes virus-7 and -8 have also been detected in IPF [ 39].
African horse sickness virus (AHSV), equine encephalosis virus (EEV), and equine herpesviruses (EHV) 1 and 4 were identified by using viral culture and antigen detection assays and/or complement fixation tests (31 ) on serum samples and using RT-PCR to detect AHSV and EHV (32 ).
The serum Coccidioides complement fixation titer was 1 512; cerebrospinal fluid analysis was unremarkable.
