By test type

Data source: Public Health Ontario Laboratory HIV Datamart
 

Key points

  • In 2016, the vast majority of tests (95.1%) were nominal and the remainder were coded (2.0%) or anonymous (2.9%).
  • Trends over time varied by test type. Nominal and coded testing were both relatively stable for most of the past decade, while anonymous testing increased following its expansion in Ontario in 2006 and rose to 17,393 tests by 2014. In recent years, only nominal testing has increased, while both coded and anonymous testing have decreased.
  • While the test positivity rate has decreased over time for all test types, it was consistently four to five times higher for anonymous testing compared to nominal testing. In 2016, the test positivity rate was 0.69% for anonymous testing and 0.15% and 0.14% for nominal and coded testing, respectively.

 

Figures

Figure 1 Number of HIV tests (thousands) by test type, Ontario, 2007 to 2016


Snapshot: The number of nominal tests was relatively stable between 2007 and 2013, and then increased to almost 500,000 by 2016. See Table 1 below for data. See Figure 2 below for trends in coded and anonymous tests.


Figure 2 Number of HIV tests (thousands) by test type (nominal excluded), Ontario, 2007 to 2016


Snapshot: The number of coded tests was relatively stable between 2007 and 2013 – decreasing thereafter. The number of anonymous tests increased to 17,393 by 2014 – also decreasing thereafter. See Table 1 below for data. See Figure 1 above for trends in nominal tests.


Figure 3 Test positivity rate by test type, Ontario, 2007 to 2016


Snapshot: Between 2007 and 2016, the positivity rate decreased for all test types and was consistently higher for anonymous tests. In 2016, the test positivity rate was 0.69% for anonymous testing and 0.15% and 0.14% for nominal and coded testing, respectively. See Table 1 below for data.
 

Tables

Table 1 Number of tests and positivity rate by test type, Ontario, 2000 to 2016

Notes: Data provided by Public Health Ontario Laboratory. HIV-negative prenatal tests not included.