🍺 Vitamin D 25 Oh D3 Normal Range
Główną postacią, pod którą witamina D występuje w krążeniu, jest 25-hydroksywitamina D (inaczej 25(OH)D, 25-hydroksycholekalcyferol, kalcydiol), czyli metabolit będący efektem pierwszej hydroksylacji cząsteczki witaminy D2 i D3 w pozycji 25, do której dochodzi w wątrobie.
25-OH Vitamin D Calcidiol D2 D3 Vitamin D Assay 25HDN 25OHD 25DEP Calciferol Ergocalciferol Cholecalciferol Colecalciferol CYP2R1 Diagnosis of vitamin D deficiency Differential diagnosis of causes of rickets and osteomalacia Monitoring vitamin D replacement therapy Diagnosis of hypervitaminosis D
SPECIMEN REQUIREMENTS: Collect: 5 ml Gold (serum) or Red top tube. Separate serum (min volume required is 0.5 ml) Min. Collection: 1.0 ml whole blood Transport: Refrigerated Stability: After serum separation. Ambient: 24 hours; Refrigerated: 1 week. Frozen: 1 month Unacceptable Conditions: Room Temperature specimens older than 24 hours.
According to the Endocrine Society, vitamin D deficient adults should be treated with 50,000 IU (1250 ug) of vitamin D weekly [equal to 7143 IU (179 ug) daily] for eight weeks to achieve a blood level greater than 30 ng/mL (75 nmol/L). Maintenance therapy thereafter should be at least 1500-2000 IU (38-50 ug) per day.
At that time, their experts concluded: "Based on all the evidence, at a minimum, we recommend vitamin D levels of 30 ng/mL, and because of the vagaries of some of the assays, to guarantee sufficiency, we recommend between 40 and 60 ng/mL for both children and adults."
The major circulating form of vitamin D is 25-hydroxyvitamin D (25(OH)D); thus, the total serum 25(OH)D level is currently considered the best indicator of vitamin D supply
Wskaźnikiem zaopatrzenia organizmu w witaminę D jest stężenie 25-hydroksywitaminy D w surowicy (25-OHD). W badaniu oznacza się nieaktywną biologicznie formę witaminy D, ponieważ poziom 1,25-(OH)2 D może być w normie nawet przy niedoborach witaminy w organizmie. Ile wynosi norma witaminy D3?
The amount of 25-hydroxyvitamin D in your blood is a good indication of how much vitamin D your body has. The test can determine if your vitamin D levels are too high or too low. The
In people whose 25(OH)D is 20 to 30 ng/mL (50 to 75 nmol/L), treatment with 600 to 800 international units (15 to 20 micrograms) of vitamin D3 by mouth daily is usually sufficient to maintain levels in the target range.
OCDdXT.
vitamin d 25 oh d3 normal range