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INTRODUCTORY COMMENTS

In preparing for the Appendix, the authors have taken into account the fact that the system of international units (SI, système international d'unités) is used in most countries and in some medical journals. However, clinical laboratories may continue to report values in "conventional" units. Therefore, both systems are provided in the Appendix.

For many analytes, the reference ranges given here are meant as general guidelines rather than absolute normative ranges. Because of differences in methodology, assay reagents, and collection methods, reference values may differ among clinical laboratories. Therefore, for diagnostic pt management purposes, reference ranges provided by the laboratory performing the test should be used for interpretation of a given result.

REFERENCE VALUES FOR LABORATORY TESTS

TABLE 220-1HEMATOLOGY AND COAGULATION

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