Table 2

Leucocyte counts: IRIS compared with manual microscopy before and after review

Manual count (cells/µl)	IRIS count (cells/µl)
Manual count (cells/µl)	<10		10–49		50–99		⩾100
	Pre	Post	Pre	Post	Pre	Post	Pre	Post
<10	245	327	132	88	27	12	34	11
10–49	43	82	80	61	34	27	30	18
50–99	4	8	10	11	17	16	26	22
⩾100	1	2	5	7	15	21	162	152