oa South African Medical Journal - Pitfalls in the interpretation of blood chemistry results
Apparently abnormal blood chemistry results may be caused by many factors other than disease. Incorrect specimen collection with excessive venous stasis and haemolysis, or undue delay in separating cells from serum can affect a number of tests. Medication may also influence results, notably the protein-bound iodine, as may procedures such as rectal examination and intravenous fluid administration.
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