Urinary Fluoride (F)

2.6 grams of fluoride in normal adults. Fluoride absorbed from the intestine is mostly excreted by urine and feces, and is stored in about 10% to 48% of fluoride. Determination of urinary fluoride has specific significance for inorganic fluorosis. Basic Information Specialist classification: growth and development check classification: urine / kidney function test Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Deficiency of fluoride in childhood is prone to dental caries; the lack of fluoride in the elderly affects the utilization of calcium and phosphorus, making bones brittle. Normal value: Urinary fluoride: 10-58μmol/L Above normal: Inorganic fluorine poisoning. negative: Positive: Reminder: The sample and standard curve should be measured at the same room temperature. The potential values ​​measured in the range of pH 4 to 7 are relatively stable. Normal value <0.053 mmol/24 h (<1 mg/24 h). 10 to 58 μmol/L (0.2 to 1.1 μg/ml). Clinical significance Reduce the incidence of dental caries and hip fractures in the elderly. Increased in local fluorosis, industrial fluorosis. The result is low, the disease may be high : the result of dental caries is high. Possible diseases: precautions for skeletal fluorosis (1) The fluoroborate ion selective electrode is dropped into the electrode rod by 0.5 ml of the liquid filling (10-2 mol/L sodium chloride saturated with sodium chloride + 10-2 mol/L sodium fluoroborate solution) before use. Insert the internal reference electrode (silver/silver chloride) in a 10-3 mol/L sodium fluoroborate solution for 2 h to activate. After the test is completed, it should be immersed in deionized water and stored dry for long-term use. (2) Temperature and pH have a certain influence on the measurement, and the potential value and slope gradually decrease as the room temperature decreases. Therefore, the sample and standard curve should be measured at the same room temperature. The potential values ​​measured in the range of pH 4 to 7 are relatively stable. (3) The urine pigment is seriously interfered with the measurement, so the urine sample should be treated with activated carbon until it is colorless and transparent. Generally, 4 to 6 g of activated carbon is added per 50 ml of urine sample. The decolorization effect of activated carbon of different purity of different manufacturers is different. Generally, it is suitable to analyze pure powdered activated carbon. Inspection process The urine of the subject is collected and detected by chemical methods. Not suitable for the crowd Generally not. Adverse reactions and risks No.

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