RADIOMETER ABL90 FLEX User Manual

ABL90 FLEX reference manual 7. Performance characteristics
7-27
Subjects Age Hct
mean
Hct
95 % range
MCHC
mean, g/L
MCHC 95
% range,
g/L
Men Adults 0.47 0.39-0.55 340 310-370
Women Adults 0.42 0.36-0.48 330 300-360
Boys Newborn
1 month
3 months
6 months
9 months
1 year
2 years
4 years
8 years
14 years
0.59
0.50
0.45
0.46
0.45
0.41
0.40
0.37
0.41
0.41
0.53-0.65
0.44-0.56
0.39-0.52
0.39-0.51
0.39-0.52
0.37-0.45
0.36-0.47
0.30-0.44
0.37-0.45
0.36-0.46
330
320
330
300
280
290
300
280
290
300
320-340
310-330
320-340
290-310
270-300
280-300
280-310
270-290
280-300
290-310
Girls Newborn
1 month
3 months
6 months
9 months
1 year
2 years
4 years
8 years
14 years
0.58
0.49
0.44
0.44
0.43
0.43
0.43
0.43
0.40
0.40
0.51-0.65
0.42-0.56
0.39-0.51
0.39-0.50
0.37-0.50
0.37-0.49
0.36-0.50
0.36-0.51
0.36-0.46
0.36-0.47
340
320
330
320
300
300
300
280
280
290
330-350
310-330
320-340
310-330
290-310
290-310
290-310
270-290
270-290
280-300
If
MCHC is defined as MCHC = 332 g/L  MCHC, then the contribution to the relative
error on the
ctBil measurement is as follows:
tBil Hct MCHC
tBil 1 Hct MCHC
c
c

 

A worst-case example, using 95 % confidence values:
A newborn girl with Hct = 0.58, MCHC = 350 g/L and
ctBil = 400 mol/L. ctHb may be
derived as Hct
 MCHC = 0.58 x 350 g/L = 20.3 g/dL (reference range is 18.0  21.0
g/dL).
tBil 0.58 18
0.071
tBil 1 0.58 350
c
c

  

And ctBil = 0.071 x 400 = 28 mol/L.
If the reference value for Hct is known, it is possible to correct the displayed
ctBil value,
using the following equation:
1 tHb(displayed) 0.0301
tBil(corrected) tBil(displayed)
1 Hct(reference)
c
cc



ctHb is measured in g/dL.

RADIOMETER ABL90 FLEX Specifications

General

Brand	RADIOMETER
Model	ABL90 FLEX
Category	Measuring Instruments
Language	English