Urine vitamin B2 (VitB2, VB2)

Determination of urinary vitamin B2 is meaningful for the diagnosis of riboflavin deficiency. Free riboflavin, FAD and FMN in plasma were relatively constant, and the assay had no diagnostic value. It is often used to determine the amount of vitamin B2 excreted in the urine as a basis for diagnosis. Due to the difficulty in collecting 24h urine, two methods of urinary riboflavin/creatinine measurement and urinary excretion load test are often used. Basic Information Specialist classification: urinary examination classification: urine / kidney function test Applicable gender: whether men and women apply fasting: not fasting Analysis results: Below normal: Found in vitamin B2 deficiency, cheilitis, glossitis, angular cheilitis, skin oil, corneal vascularization. Normal value: Urine vitamin B2: 0.27-1.10umol/d Above normal: Seen in excess of vitamin B2 intake. negative: Positive: Tips: Fresh morning urine should be used as much as possible, and middle urine should be used. Collect 24h urine in a brown bottle, first add 10ml sulfuric acid 20ml to prevent vitamin B2 damage. Do not take too much vitamin B2 and eat foods rich in vitamin B2, such as animal internal organs (liver, kidney, heart), milk, eggs and so on. Menstrual women are not suitable for this examination. Normal value 24 to 81 μmol·Cr (80 to 269 μg/g·Cr) or 0.27 to 1.10 μmol/d. Clinical significance Elevation: When using vitamin B2. Reduced: vitamin B2 deficiency (insufficient intake, malabsorption, vitamin B2 activation disorder, reduced intestinal bacterial synthesis, glossitis, angular keratitis, scrotal dermatitis, etc.) Low results may be diseases: angular keratitis, cheilitis, glossitis precautions Note during inspection: Fresh morning urine should be used as much as possible during this examination. The urine that is randomly selected is suitable for the middle urine. The urine should be collected in the brown bottle for 24 hours. The bottle is pre-added with 20% sulfuric acid 20ml to prevent the destruction of vitamin B2. Note before the test: Do not take too much vitamin B2 drugs and eat foods rich in vitamin B2, such as animal internal organs (liver, kidney, heart), milk, eggs and so on. Not suitable for the crowd: menstrual women. Inspection process Inspection process: As with routine urine tests, use a clean, dry container with a disposable urine cup and urine test tube provided by the hospital. Take about 10 ml of urine and send it to the designated inspection window of the hospital for examination by a doctor. Not suitable for the crowd Menstrual women. Adverse reactions and risks no.

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