title: Impact of posture on the "reference range" for serum proteins and calcium.
abstract: The impact of water shifts due to changes in posture has been reinvestigated for serum protein and calcium concentrations in a young, healthy population. We found that generaly accepted normal ranges for total serum protein, and to a lesser degree for total serum calcium, are not acceptable as a reference range for a hospitalized population that is predominantly in a supine position. Our data indicate a smaller biological variability for total protein and calcium for a reference population in the recumbent posture as compared to the same population in the upright position.
mesh_terms: D000328:Adult; D001499:Bayes Theorem; D001798:Blood Proteins / Q000032:analysis*; D002118:Calcium / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D011187:Posture; D012016:Reference Values; D013997:Time Factors
chemical_list: D001798:Blood Proteins; D002118:Calcium