Table 1.

CD4 count bias between FTCA and reference methods for some clinical samples with high and low monocyte concentrations.

Sample No.	Sample type	Monocytes count, cells/μL	CD4 count, cells/μL		Bias (%)
			Reference methods	FTCA*
1	CD3 depleted	800	220	205	−15 (−6.8 %)
2	CD3 depleted	800	204	188	−16 (−7.8 %)
3	Diluted blood	160	210	194	−16 (−7.6 %)
4	Whole blood	730	451	477	+26 (+5.8 %)
5	Whole blood	440	409	391	−18 (−4.4 %)

^*Calculated from formula: y = 0.336 x + 56.2 (from calibration plot Trendline)