Table 2. Comparison between the theoretical biological variation and the intra-individual variations recorded in the study cohorts.

		2010 (subjects exceding CVBw)			2012 (subjects exceding CVBw)
	CVBw (%)	T2vsT1	T3vsT2	T3vsT1	T2vsT1	T3vsT2	T3vsT1
		(n = 144)	(n = 144)	(n = 144)	(n = 109)	(n = 109)	(n = 109)
WBC	11.2	61	95	92	55	58	71
RBC	2.1	141	126	112	104	83	92
Hb	3.4	136	118	81	95	56	77
Ht	2.4	134	137	87	106	81	81
MCV	1.3	60	44	104	28	16	36
MCH	1.6	21	40	38	26	19	18
MCHC	1.7	46	128	140	25	28	38
PLT	9.0	67	63	59	70	72	76
Ret%	13.0	93	106	92	75	80	67
Ret#	13.0	98	117	93	80	89	72

The table shows the theoretical intra-individual variability values (CV_Bw) and the number of subjects (out of 144 for the 2010 race and 109 for the 2012 race) for each GiroBio race event, whose percentage variation between time-points exceeded the theoretical CV_Bw.