The objective of this study was to evaluate a service improvement project offering HIV testing through either self-testing or self-sampling in an online sexual health service by measuring type of test chosen and the reason for this choice. We created a web-page offering choice of online self-sampling or self-testing with information on the advantages and disadvantages of both methods. Anyone aged over 18 years resident in England, Scotland or Wales could order either type of test. We describe the characteristics of users, the tests chosen and the reasons for the choice. A total of 1502 HIV testing orders were placed and 1466 (97.6%) testing kits were dispatched after exclusion of multiple orders by the same user. Sixty-seven per cent of users chose self-testing (n = 984) and the rest chose self-sampling (n = 482, 32.9%). The most frequent reasons for choosing self-testing were: immediate results (n = 264, 46.9%), ability to complete the test themselves (n = 168, 29.8%), less blood required (n = 67, 11.9%) and the privacy of testing at home (n = 55, 9.8%). Public sector provision of self-testing as an adjunct to clinic-based HIV testing services is likely to be highly acceptable to UK populations. However, a proportion will prefer self-sampling, and maintaining choice of testing modality is important.

ObjectivesThis service improvement study scoped the value of using quantitative reactivity levels (RL) to introduce a two-tier counselling approach in HIV self-sampling services. The objectives were to (1) use self-reported confirmatory test results to estimate the positive predictive value (PPV) of the first-line assay and (2) to calculate the impact on the PPV and theoretical negative predictive value of a range of proposed RL thresholds, which could be used to differentiate between higher and lower reactive results.MethodsWe studied HIV testing data from a UK-based online sexual health service from 1 December 2018 to 15 July 2020. Routinely collected, anonymised data on RL and self-reported confirmatory testing outcomes were used to calculate PPV at a range of RL thresholds.Results116 474 adequate HIV tests were reported during the study period, of which 889 were reactive (0.76%, 95% CI 0.71% to 0.82%). Confirmatory testing outcomes were self-reported by 572 (64.34%) reactive service users, of whom 43 (7.52%) had a new HIV diagnosis, 412 (72.03%) were negative and 117 (20.45%) already had a known HIV diagnosis. PPV was 9.45% at an RL threshold of >1. Quantitative RLs were reported for 30 281 results, of which 200 were reactive. PPV increased to 80% at an RL threshold of >30. No confirmed HIV diagnoses were reported among service users with RL <30.ConclusionRLs could be used to support a more nuanced approach to counselling, potentially reducing anxiety prior to confirmatory testing.