RT Journal Article SR Electronic T1 Nutritional assessment: its role in the provision of nutritional support JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1083 OP 1088 DO 10.1136/jcp.2007.051813 VO 61 IS 10 A1 W J Marshall YR 2008 UL http://jcp.bmj.com/content/61/10/1083.abstract AB Generalised undernutrition is common in hospital patients and in the community. It is frequently unrecognised and is associated with a range of adverse consequences that contribute to increased morbidity and mortality. The National Institute for Health and Clinical Excellence recommends that all individuals engaging with healthcare or admitted to residential homes in the community should be screened for undernutrition. Laboratory investigations have little place in the diagnosis of undernutrition: this is primarily a clinical process. In particular, the measurement of serum albumin concentration, though widely promulgated in the past as an index of nutritional status, is worthless for this purpose. Laboratory investigations are, however, of importance: to diagnose specific nutritional deficiencies (eg, of trace elements) and to monitor the provision of nutritional support, to detect metabolic complications and to assess its adequacy (for which the measurement of serum prealbumin concentrations, particularly in conjunction with measurements of C-reactive protein, may be of value).