Roche 9180 - Reference; Normal Ranges; Reference and Critical Values

Roche Diagnostics
Instructions for Use · Version 10.0 51
9180 Electrolyte Analyzer 4 Theoretical foundation
Reference and critical values
Reference and critical values
The result of laboratory tests have little practical utility until clinical studies have
ascribed various states of health and disease to intervals of values.
(1)
Reference intervals are useful because they attempt to describe the typical results
found in a defined population of apparently healthy people. Different methods may
yield different values, depending on calibration and other technical considerations.
Hence, different reference intervals and results may be obtained in different
laboratories. However, reference values may need to be adapted for specific patient
groups, whose physiological data are known to differ from the healthy population.
Reference intervals, although useful as a guideline for clinicians, should not be used
as absolute indicators of health and disease.
(2)
q
The reference intervals presented in this chapter are for general information purposes only.
Individual laboratories should generate their own set of reference intervals.
Reference / normal ranges
(1) Tietz Textbook of Clinical Chemistry and Molecular Diagnostics, 4th Edition 2006, p. 2252
(2) see Chapter 16 of "Tietz Textbook of Clinical Chemistry and Molecular Diagnostics", 4th Edition 2006
Parameter Normal range Sample matrix Unit
Reference values
(Default values)
Source
Sodium
Na
+
(mmol/L)
136 - 145 Serum, plasma mmol/L 136.0 - 145.0
Tietz Textbook of Clinical
Chemistry and Molecular
Diagnostics, 5th edition 2012, p.
2168
Potassium
K
+
(mmol/L)
3.5 - 5.1 Serum mmol/L 3.50 - 5.10
Tietz Textbook of Clinical
Chemistry and Molecular
Diagnostics, 5th edition 2012, p.
2164
Chloride
Clˉ
(mmol/L)
98 - 107 Serum, plasma mmol/L 98.0 - 107.0
Tietz Textbook of Clinical
Chemistry and Molecular
Diagnostics, 5th edition 2012, p.
2139
Calcium Ca
2+
(mmol/L)
1.15 - 1.33
Serum, plasma,
heparin
mmol/L 1.150 - 1.330
Tietz Textbook of Clinical
Chemistry and Molecular
Diagnostics, 5th edition 2012, p.
2137
Lithium
Li
+
(mmol/L)
0.5 - 1.0 Serum, plasma mmol/L 0.5 - 1.0
Tietz Textbook of Clinical
Chemistry and Molecular
Diagnostics, 5th edition 2012, p.
2182
Table 4-1 Reference / normal ranges