Low Level Donor 1 Donor 2 Donor 3 Donor 4 Donor 5 Donor 6
Rep 1 32 35 39 24 30 24
Rep 2 28 33 39 25 32 24
Rep 3 32 34 42 23 34 24
Mean 31 34 40 24 32 24
S.D. 2 1 2 1 2 0
%RSD 7% 4% 5% 5% 6% 1%
Measured Hematocrit 29 34 36 25 32 27
% Difference from Measured 6% 0% 11% -6% 0% -11%
Normal Level Donor 1 Donor 2 Donor 3 Donor 4 Donor 5 Donor 6
Rep 1 49 52 50 39 47 37
Rep 2 49 49 48 38 45 38
Rep 3 48 54 52 41 50 35
Mean 49 51 50 39 47 36
S.D. 0 2 2 2 2 1
%RSD 1% 5% 4% 4% 5% 4%
Measured % Hematocrit 46 51 50 38 48 41
% Difference from Measured 6% 1% 0% 4% -2% -11%
High Level Donor 1 Donor 2 Donor 3 Donor 4 Donor 5 Donor 6
Rep 1 76 64 71 65 58 69
Rep 2 69 73 73 70 68 67
Rep 3 64 79 68 64 59 61
Mean 69 72 70 66 62 66
S.D. 6 8 3 3 6 4
%RSD 9% 11% 4% 5% 9% 6%
Measured % Hematocrit 66 71 71 68 67 68
% Difference from Measured 5% 0% -1% -3% -8% -4%
Table 2: Determination of hematocrit for donor samples using reflectance at 980 nm.
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