Table 2. International unit conversion based on replicate testing of serial dilutions of WHO HIV-2 International Standard.

IU/ml	Measured Copies/ml				Ave	SD	%CV	Copies/IU Conversion
1000	12,513	20,473	9,316	-	14,101	5,745	41%	14.1
500	7,325	3,450	10,975	6,075	6,956	3,128	45%	13.9
250	6,438	2,025	3,713	2,800	3,744	1,924	51%	15.0
125	2,163	1,363	1,900	413	1,460	773	53%	11.7
63	2,000	825	1,313	188	1,082	766	71%
31	725	413	988	388	629	285	45%
16	188	BLD	BLD	300	244	79	32%
8	325	BLD	BLD	113	219	150	68%
							Ave	13.7

BLD = below limit of detection.