Table 1.

Volume of blood collected using pre-packaged blood-collection devices (inverted cup—10 devices per lot tested)

Test lot #	Mean	SD	Min	Max	% variation
1 (Uganda)	2.71	0.56	1.75	3.50	−46
1 (Nigeria)	3.28	0.63	2.27	4.20	−34
2	3.98	0.61	3.07	5.11	−20
3 (Uganda)	3.93	0.49	3.33	4.70	−21
3 (Nigeria)	4.76	0.33	4.39	5.31	−5
4	5.33	0.49	4.29	6.02	7
5	5.46	0.53	4.69	6.12	9
6	5.43	0.62	4.80	6.43	9

All manufacturers specify a 5 μl fingerstick blood sample. % variation is based on the difference between this 5 μl standard and the mean volume in column 2. Lots 1 and 3 were sampled from both Uganda and Nigeria; all other lots were sampled from Nigeria only