| urine metanephrine | A test that measures the level of catecholamines or their metabolites in the urine. A 24 hour urine sample is necessary for this assay. Elevations may be seen in pheochromocytoma or neuroblastoma. Normal urine levels of adrenaline should be: 0.5 to 20 mcg/ml and normal urine levels of noradrenaline should be 15 to 80 mcg/ml. (27 Sep 1997) |
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| metanephrine | <chemical> Alpha-(methylaminomethyl)vanillyl alcohol. Product of epinephrine o-methylation. It is a commonly occurring, pharmacologically and physiologically inactive metabolite of epinephrine. Chemical name: Benzenemethanol, 4-hydroxy-3-methoxy-alpha-((methylamino)methyl)- (12 Dec 1998) |
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| ammoniacal urine | <nephrology> Excretion of urine that contains an excessive amount of ammonia. Synonym: ammoniacal urine. Origin: ammonia + G. Ouron, urine (05 Mar 2000) |
| black urine | The dark urine of melanuria or haemoglobinuria. (05 Mar 2000) |
| maple syrup urine | See: maple syrup urine disease. (05 Mar 2000) |
| maple syrup urine disease | Hereditary disease due to deficiency of an enzyme involved in amino acid metabolism, characterised by urine that smells like maple syrup. (12 Dec 1998) |
| Gerhardt's test for urobilin in the urine | The urobilin is extracted with chloroform and then treated with iodine and potassium hydrate, a fluorescent green colour being produced. (05 Mar 2000) |
| residual urine | Urine remaining in the bladder at the end of micturition in cases of prostatic obstruction, bladder atony, etc. (05 Mar 2000) |
| gouty urine | Urine of a high colour containing uric acid in excess. (05 Mar 2000) |
| chylous urine | Urine of a milky appearance, containing chyle. Synonym: milky urine. (05 Mar 2000) |
| citric acid urine test | <investigation> A test which measures the amount of citric acid in the urine. This test is used to diagnose renal tubular acidosis and evaluate those with kidney stones. A below normal level of citric acid in the urine can indicate renal tubular acidosis. Urine citric acid levels can be increased in those with have a high carbohydrate diet, are on oestrogen therapy or vitamin D therapy. (27 Sep 1997) |
| milky urine | Urine of a milky appearance, containing chyle. Synonym: milky urine. (05 Mar 2000) |
| cloudy urine | Urine with a cloudy appearance, usually due to pus, crystals, bacteria, blood, or free fat globules. Synonym: nebulous urine. (05 Mar 2000) |
| crude urine | Pale urine of low specific gravity, with very little sediment. (05 Mar 2000) |
| honey urine | An obsolete term for diabetes mellitus. (05 Mar 2000) |
| nebulous urine | Urine with a cloudy appearance, usually due to pus, crystals, bacteria, blood, or free fat globules. Synonym: nebulous urine. (05 Mar 2000) |