Fig. 5

Availability of the antigenic C1q testing in Canada. a List of laboratories offering antigenic C1q at the time of the survey. When available, complementary information such as the type of assay, the reference range, the type of sample and the cost of this assay are available in this table. Samples collected by CHAEN members were processed either by radial immunodiffusion (70%) or nephelometry (30%). b List of laboratories that did not process locally the samples for the evaluation of the antigenic C1q and location where this sample was processed