25-hydroxy vitamin d…

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what the risks are blood test, 25-oh vitamin d, 25-hydroxy vitamin d test measures the amount, 25-hydroxy vitamin d in blood serum, adult, child, blood is drawn, a vein, the elbow, the hand, puncture site is cleaned, antiseptic, a tourniquet, around the upper arm to apply pressure, restrict blood flow, the vein, veins below the tourniquet to fill, blood, a needle is inserted, vein, blood is collected in an air-tight vial, a syringe, tourniquet is then removed, restore circulation, after blood has been collected the needle is removed, puncture site is covered to stop any bleeding, infant, young child, area is cleansed, antiseptic, punctured, a sharp needle, collected, small container, a bandage applied, puncture site, any continued bleeding, fast, 4 hours, infants, children, test depends on child's age, level of trust, prepare child, infant test, procedure preparation, birth to 1 year, toddler test, procedure preparation, 1 to 3 years, preschooler test, procedure preparation, 3 to 6 years, schoolage test, procedure preparation, 6 to 12 years, adolescent test, procedure preparation, 12 to 18 years, the needle is inserted to draw blood, feel moderate pain, others feel only a prick, stinging sensation, some throbbing, this test is used, a patient has a deficiency, excess of vitamin d, 25-hydroxy vitamin d, most accurate measure of vitamin d stores, 25-hydroxy vitamin d is stored, in the liver where it is converted from other forms of vitamin d either obtained, diet, in the skin by sunlight, 25-hydroxy vitamin d is then changed to its active form, 1,25-dihydroxy vitamin d, in the kidney, active form of vitamin d causes, increases in calcium, phosphate by activity primarily on the intestines, kidney, bone, normal range is 16.0 to 74.0 ng/ml, normal value ranges, among different laboratories, ng/ml = nanograms per milliliter, low 25-hydroxy vitamin d levels indicate a deficiency in vitamin d, either from lack of exposure to sunlight, lack of adequate vitamin d, in the diet, vitamin d deficiency, lead to low blood calcium levels, hypocalcemia, thin, weak bones, osteoporosis, osteomalacia, high levels of parathyroid hormone, secondary hyperparathyroidism, high 25-hydroxy vitamin d indicates excess vitamin d, hypervitaminosis d, too much vitamin d, in the form of doctor-prescribed dietary supplements, lead to high calcium levels, hypercalcemia, excessive bleeding, fainting, feeling lightheaded, hematoma, blood accumulating under the skin, infection, a slight risk, the skin is broken, multiple punctures to locate veins, veins, arteries vary in size, obtaining a blood sample.