Serum 25-OH vitamin D2 and D3 are stable under exaggerated conditions.
نویسندگان
چکیده
CM. Comparison of plasma prothrombin and factor VII and urine prothrombin F1 concentrations in patients on long-term warfarin therapy and those in the initial phase. Am J Hematol 1998;57:193–9. 5. Johnston M, Harrison L, Moffat K, Willan A, Hirsh J. Reliability of the international normalized ratio for monitoring the induction phase of warfarin: comparison with the prothrombin time ratio. J Lab Clin Med 1996 128:214–7.
منابع مشابه
اندازه گیری همزمان 25- هیدروکسی کوله کلسیفرول و 25-هیدروکسی ارگوکلسیفرول به روش کروماتوگرافی مایع با کارایی بالا
Introduction & Objective: High prevalence of vitamin D insufficiency in Iran calls for a reliable assessment of vitamin D status for diagnostic, research as well as public health purposes. Circulating level of 25(OH)D has been generally accepted as a reliable indicator of vitamin D status. HPLC-based analyses are considered as standard methods for 25(OH)D assays. The aim of this study was to ...
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Public health recommendations do not distinguish between vitamin D2 and vitamin D3, yet disagreement exists on whether these two forms should be considered equivalent. The objective of the present study was to evaluate the effect of a daily physiological dose of vitamin D2 or vitamin D3 on 25-hydroxyvitamin D (25(OH)D) status over the winter months in healthy adults living in Dunedin, New Zeala...
متن کاملRapid and simultaneous determination of 25-OH-vitamin D2 and D3 in human serum by LC/MS/MS: Validation and uncertainty assessment
25-OH Vitamin D3 and 25-OH Vitamin D2 were determined by rapid, simple and validated LC/MS/MS method without using SPE and isotopic standard. The relative standard deviations (RSD) were found to be 3.1 and 2.8 % for 25-OH Vitamin D3 and 25-OH Vitamin D2, respectively. The correlation coefficient was grater than 0.99 for both analytes in the calibration range. The recoveries at 100 μg L concentr...
متن کاملPerformance evaluation of two immunoassays for 25-hydroxyvitamin D
Although immunoassays in measuring 25-hydroxyvitamin D [25(OH)D] have been improved recently, relatively large differences are still seen between results of 25(OH)D measured by immunoassays and by liquid chromatography-tandem mass spectrometry (LC-MS/MS). In the present studies, we compared two immunoassays with LC-MS/MS for measuring 25(OH)D concentrations. Concentrations of 25-hydroxyvitamin ...
متن کاملEvidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does vitamin D2.
In all species tested, except humans, biological differences between vitamins D2 and D3 are accepted as fact. To test the presumption of equivalence in humans, we compared the ability of equal molar quantities of vitamin D2 or D3 to increase serum 25-hydroxyvitamin D [25(OH)D], the measure of vitamin D nutrition. Subjects took 260 nmol (approximately 4000 IU) vitamin D2 (n=17) or vitamin D3 (n=...
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عنوان ژورنال:
- Clinical chemistry
دوره 54 11 شماره
صفحات -
تاریخ انتشار 2008