The pre-analytical stability of 7 biochemical parameters (parathyroid hormone -PTH-, vitamins A, C E and D, 1,25-dihydroxyvitamin D and insulin) at +4 °C, was studied on whole blood samples before centrifugation. The impact of freezing at -20°C was also analyzed/performed for PTH and vitamin D. The differences in the results of assays for whole blood samples, being kept for different times between sampling time and analysis, from 9 healthy adults, were compaired by using a Student t test. The 7 analytes investigated remained stable up to 4 hours at +4°C in whole blood. This study showed that it is possible to accept uncentrifuged whole blood specimens kept at +4°C before analysis. PTH is affected by freezing whereas vitamin D is not.
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http://dx.doi.org/10.1684/abc.2015.1060 | DOI Listing |
Scand J Gastroenterol
January 2025
Department of Internal Medicine, Section of Gastroenterology, Esbjerg Hospital - University Hospital of Southern Denmark, Esbjerg, Denmark.
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Division of Hematology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, and King Chulalongkorn Memorial Hospital, Thai Red Cross, Bangkok, Thailand.
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Swiss Med Wkly
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View Article and Find Full Text PDFFront Endocrinol (Lausanne)
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School of Public Health, Xinjiang Medical University, Urumqi, Xinjiang, China.
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View Article and Find Full Text PDFSubst Abuse Rehabil
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