By test type 2017

Data source: Public Health Ontario Laboratory HIV Datamart

Key points

  • In 2017, the vast majority of HIV tests (95.9%) – including POC tests – were nominal and the remainder were coded (1.6%) or anonymous (2.5%).
  • Trends over time varied by test type. Nominal HIV testing remained relatively stable beween 2008 and 2013 and then began to increase. Coded HIV testing was relatively stable between 2008 and 2013, and decreased between 2013 and 2017. Anonymous testing increased between 2008 and 2014, following the expansion of anonymous testing in Ontario in 2006, and peaked at 17,392 tests by 2014.
  • Since 2013, nominal HIV testing has increased by 37.0% while coded and anonymous testing decreased by 60.4% and 14.9%, respectively.
  • While the HIV 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 2017, the test positivity rate was 0.15% for nominal testing, 0.20% for coded testing and 0.64% for anonymous testing.

 

Figures

Figure 1 Number of HIV tests (thousands) by test type, Ontario, 2008 to 2017

Snapshot: The number of nominal tests was relatively stable between 2008 and 2013 and then increased to a high of over 550,000 tests by 2017. See Figure 2.2 below for trends in coded and anonymous tests.


Figure 2 Number of HIV tests (thousands) by test type (nominal excluded), Ontario, 2008 to 2017

Snapshot: The number of coded tests was relatively stable between 2008 and 2013 and decreased thereafter to a low of almost 9,000 tests in 2017. The number of anonymous tests peaked at 17,392 in 2014 and decreased thereafter to 14,609 in 2017.


Figure 3 Percent of HIV tests by test type (nominal excluded), Ontario, 2008 to 2017

Snapshot: Between 2008 and 2017, the vast majority of tests were consistently nominal. While the percent of HIV tests that were nominal increased slightly to a peak in 2017 at 95.9%, the percent coded and anonymous both decreased.


Figure 4 HIV test positivity rate by test type, Ontario, 2008 to 2017

Snapshot: Between 2008 and 2017, the positivity rate decreased for all test types and was consistently higher for anonymous tests.

 

Tables

Table 1 Number of HIV tests and test positivity rate by test type, Ontario, 2008 to 2017
Table 2 Percent of HIV tests by test type, both sexes, Ontario, 2008 to 2017

 

Notes: Data provided by Public Health Ontario Laboratory. Excludes HIV-negative prenatal tests. Positive results and positivity rate includes those being diagnosed for the first time in Ontario after being diagnosed previously elsewhere (known to be HIV-positive at the time of testing).