Urine vanillylmandelic acid (VMA)

Vanilla mandelic acid is the ultimate metabolite of adrenaline and norepinephrine. Adrenalin and norepinephrine produce 3-methoxy-adrenalin and 3-methoxynorepinephrine mainly through the action of catechol methyltransferase and monoamine oxidase. The final product is vanillyl mandelic acid, which is excreted by urine. . 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 hyperthyroidism, primary chronic adrenal insufficiency. Normal value: Urine vanilla mandelic acid: 10-35μmol/24h urine Above normal: Found in pheochromocytoma, sympathetic neuroblastoma, essential hypertension and hypothyroidism. negative: Positive: Tips: Fresh morning urine should be used as much as possible. The urine that is randomly selected is preferably mid-stage urine. Women should avoid menstruation when taking urine specimens and should prevent vaginal secretions from mixing into the urine. Normal value Normal value of 10 ~ 35μmol / 24h urine. Clinical significance Increased: seen in pheochromocytoma, sympathetic neuroblastoma, essential hypertension and hypothyroidism. Reduction: seen in hyperthyroidism, primary chronic adrenal insufficiency. Low results may be diseases: high results of essential hypertension may be diseases: hyperthyroidism, pheochromocytoma considerations Note when checking: 1. Try to use fresh morning urine when doing this test. The urine that is randomly selected is preferably mid-stage urine. 2, women should avoid the menstrual period when taking urine specimens, should prevent vaginal secretions mixed into the urine, middle-stage urine is appropriate. 3. Use a clean and dry container for urine. It is better to use disposable urine cups and urine tubes provided by the hospital. The amount of urine used for routine testing should be about 10 ml and sent for inspection as soon as possible. Inspection process Inspection method: urine test. Not suitable for the crowd Menstrual women. Adverse reactions and risks no.