Reference ranges for common blood tests

A reference range is a set of values used by a health professional to interpret a set of medical test results. The range is usually defined as the set of values 95% of the normal population falls within.

The reference range will vary, depending on the age, sex and race of a population, and even the instruments the laboratory uses to perform the tests. Furthermore, by definition, 5% of the normal population will fall outside the reference range.

Clinical biochemistry

 * Items marked with a ** are part of "CHEM-7" and CHEM-20
 * Items marked with a * are part of "CHEM-20", but not CHEM-7


 * Not listed: ** chloride, ** carbon dioxide, * uric acid,