Abbott i-STAT 1 System Manual page 429

Method Comparison (%PCV)
Coulter
n 142
Sxx 0.50
Syy 1.09
Slope 0.98
Int't 1.78
Sy.x 2.03
Xmin 18
Xmax 51
r 0.952
Factors Affecting Results*
The measurement of certain blood samples with high erythrocyte sedimentation rates (ESR) may be
affected by analyzer angle. While testing blood samples, beginning ninety (90) seconds after the cartridge
is inserted, the analyzer should remain level until a result is obtained. A level surface includes running the
handheld in the downloader/recharger.
Interferent
WBC
Total Protein
Lipids
Rev. Date: 15-Aug-16
S Plus Nova STAT Profile
®
5
192
0.46
1.31
1.06
-3.98
2.063
21
50
0.932
Effect
Grossly elevated white blood cell counts may increase results.
Hematocrit results are affected by the level of total protein as follows:
Displayed Result
HCT < 40 %PCV
HCT > 40 % PCV
Total protein levels may be low in neonatal and burn patient populations, as well
as in additional clinical populations listed in Statland.
be decreased in patients undergoing cardiopulmonary bypass (CPB) or ECMO,
and with patients receiving large volumes of saline-based IV fluids. Care should be
taken when using hematocrit results from patients with total protein levels below
the adult reference range (6.5 to 8 g/dL).
The CPB sample type can be used to correct the hematocrit result for the dilutional
affect of the pump prime in cardiovascular surgery. The CPB algorithm assumes
that cells and plasma are diluted equally and that the pump priming solution has
no added albumin or other colloid or packed red blood cells. Since perfusion
practices vary, it is recommended that each practice verify the use of the CPB
sample type and the length of time in which the CPB sample type should be used
during the recovery period. Note that for hematocrit values above 30 %PCV, the
CPB correction is ≤1.5 %PCV; the size of the correction at this level should not
impact transfusion decisions.
Abnormally high lipids may increase results. Interference from lipids will be about
two-thirds the size of the interference from protein.
Art: 714178-01O
Abbott
®
Cell-Dyn 4000
29
0.41
0.77
1.06
-1.42
1.13
19
46
0.993
TP < 6.5 g/dL
Hct decreased by ~1% PCV
for each decrease of
1 g/dL TP
Hct decreased by ~0.75 % PCV
for each decrease of
1 g/dL TP
Sysmex SE9500
29
0.53
0.76
1.11
-4.19
0.98
24
47
0.980
TP > 8.0 g/dL
Hct increased by ~1% PCV
for each increase
1 g/dL TP
Hct increased by ~0.75 %PCV
for each increase
1 g/dL TP
Total protein levels may also
3
Hct - 3