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A urine test strip or dipstick is a basic diagnostic ... in an acid medium to produce an azo dye with ... A number of substances interfere with the Ehrlich reaction ...
Test strips contain pads impregnated with chemical compounds that change color when they interact with specific elements in the sample, such as glucose, protein and blood, [10] and microscopic examination permits the counting and classification of solid elements of the urine, such as cells, crystals, and bacteria.
A nitrite test is a standard component of a urinary test strip. A positive test for nitrites in the urine is called nitrituria. This test is commonly used in diagnosing urinary tract infections (UTIs). A positive nitrite test indicates that the cause of the UTI is a Gram-negative organism, most commonly Escherichia coli. The reason for nitrites ...
The Griess test is an analytical chemistry test which detects the presence of nitrite ion in solution. One of its most important uses is the determination of nitrite in drinking water . The Griess diazotization reaction, on which the Griess reagent relies, was first described in 1858 by Peter Griess .
Blockage of urine flow in an area below the kidneys results in postrenal azotemia. It can be caused by congenital abnormalities such as vesicoureteral reflux , blockage of the ureters by kidney stones , pregnancy , compression of the ureters by cancer , prostatic hyperplasia , or blockage of the urethra by kidney or bladder stones . [ 1 ]
New Urine Test for Prostate Cancer May Help Reduce Unnecessary Biopsies. Gigen Mammoser. April 22, 2024 at 7:19 AM ... which can affect a doctor’s decision to pursue additional screening. ...
A urine test is any medical test performed on a urine specimen. The analysis of urine is a valuable diagnostic tool because its composition reflects the functioning of many body systems, particularly the kidneys and urinary system , and specimens are easy to obtain. [ 1 ]
N-(1-Naphthyl)ethylenediamine dihydrochloride is widely used in the quantitative analysis of nitrate and nitrite in water samples by colorimetry.It readily undergoes a diazonium coupling reaction in the presence of nitrite to give a strongly colored azo compound.