Abstract:
BACKGROUND:Reference values are usually defined based on blood samples from healthy men or nonpregnant women in the age range of 20-50 years. These values are not optimal for elderly patients, as many biological markers change over time and adequate reference values are important for correct clinical decisions. OBJECTIVE:To validate NORIP (Nordic Reference Interval Project) reference values in a 70-year-old population. METHODS:We studied 27 frequently used laboratory tests. The 2.5th and 97.5th percentiles for these markers were calculated according to the recommendations of the International Federation of Clinical Chemistry on the statistical treatment of reference values. RESULTS:Reference values are reported for plasma alanine aminotransferase, albumin, alkaline phosphatase, pancreas amylase, apolipoprotein A1, apolipoprotein B, aspartate aminotransferase, bilirubin, calcium, chloride, cholesterol, creatinine, creatine kinase, C-reactive protein, glucose, gamma-glutamyltransferase, HDL-cholesterol, iron, lactate dehydrogenase, LDL-cholesterol, magnesium, phosphate, potassium, sodium, transferrin, triglycerides, urate and urea. CONCLUSION:Reference values calculated from the whole population and a subpopulation without cardiovascular disease showed strong concordance. Several of the reference interval limits were outside the 90% CI of a Scandinavian population (NORIP).
journal_name
Gerontologyjournal_title
Gerontologyauthors
Carlsson L,Lind L,Larsson Adoi
10.1159/000251722subject
Has Abstractpub_date
2010-01-01 00:00:00pages
259-65issue
3eissn
0304-324Xissn
1423-0003pii
000251722journal_volume
56pub_type
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