Table 2 Yearly mean and coefficient of... | American Society of Hematology

Table 2

Yearly mean and coefficient of variation (CV) values for the quality control (QC) samples of the Adelaide reference laboratory

Control	QC target values	2001	2002	2003	2004	2005	2006 (to March 28)	New QC target values	2006 (from March 29)	2007
Low b2a2
Mean	0.07	0.07	0.07	0.09	0.08	0.06	0.07	0.06	0.06	0.06
CV, %		32	55	34	35	40	34		30	29
High b2a2
Mean	56	48	53	69	50	42	52	22	21	20
CV, %		33	33	22	25	28	29		26	29
Low b3a2
Mean	0.07	0.07	0.06	0.08	0.06	0.08	0.09	0.08	0.08	0.08
CV, %		54	52	37	41	35	34		34	35
High b3a2
Mean	85	82	77	93	69	94	93	27	26	24
CV, %		26	38	20	18	23	31		26	22
Number of RQ-PCR runs		34	110	147	157	212	77		257	192

Control	QC target values	2001	2002	2003	2004	2005	2006 (to March 28)	New QC target values	2006 (from March 29)	2007
Low b2a2
Mean	0.07	0.07	0.07	0.09	0.08	0.06	0.07	0.06	0.06	0.06
CV, %		32	55	34	35	40	34		30	29
High b2a2
Mean	56	48	53	69	50	42	52	22	21	20
CV, %		33	33	22	25	28	29		26	29
Low b3a2
Mean	0.07	0.07	0.06	0.08	0.06	0.08	0.09	0.08	0.08	0.08
CV, %		54	52	37	41	35	34		34	35
High b3a2
Mean	85	82	77	93	69	94	93	27	26	24
CV, %		26	38	20	18	23	31		26	22
Number of RQ-PCR runs		34	110	147	157	212	77		257	192

All values were recorded whether the run was accepted or rejected. A new batch of QC samples was in use from March 2006.