TABLE 2.

HIV Test Results and Time to Receipt of Confirmed Results and Referral Among Clients With Preliminary-Positive Rapid Test Results in LA and San Francisco, CA, August 2007–March 2009

	Intervention Sites		Comparison Sites
	n	%	n	%
Total tested	17,386	100.0	41,913	100.0
Positive on first rapid	250	1.40	915	2.20
False positive on first rapid test*	37	14.8	124	13.6
Positive by RTA	213		NA
Confirmed positive*	213	85.2	791	86.4
PPV†		100		86.4
Received results	250	100.0	430	47.0
Days between initial and  confirmed results,‡ median  (range)	0		8	(1–137)

^*Denominator for percentage is those with a positive result on the first rapid test.

^†For intervention sites, the PPV reported is that of the rapid test algorithm, compared with laboratory-based confirmatory testing. For comparison sites, the PPV is of the single initial rapid test, again compared with laboratory-based confirmatory testing.

^‡The intervention included same-day referral for all persons with a positive rapid test algorithm result.

NA, not applicable because the RTA was not performed in Comparison sites.