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Table 3 Proportion of PrEP Monitoring Samples Successfully Tested by Number of Self-Collection Attempts

From: Feasibility of a novel self-collection method for blood samples and its acceptability for future home-based PrEP monitoring

Number of collections attempted using Tasso device PrEP monitoring tests completeda
0 1 2 3
1 (n = 21) 6 (28.6%)b 11 (52.4%) 4 (19.0%) 0
2 (n = 27) 0 3 (11.1%) 15 (55.6%) 9 (33.3%)
Overall (n = 48) 6 (12.5%) 14 (29.2) 19 (39.6) 9 (18.8%)
  1. aTests included serum HIV antigen–antibody, rapid plasma reagin and creatinine
  2. bOf 5 participants with insufficient sample to complete at least one PrEP lab test: 3 reported methamphetamine or heavy alcohol use in the last 8 h, 1 reported history of “quick clotting,” 1 insufficient volume after centrifugation. One specimen could not be analyzed due to a laboratory processing error