Designed for outswinging wood or metal screen or storm doors 1 to 1-1/4 thick. Complete with night lock. Contemporary design with tie-down screw at bottom of handle. 1-3/4 hole centers. Material: Zinc, Color: Black, Door Thickness: 7/8 to 1-1/4.
Therefore the presence of nitrites in urine is generally an indication of the presence of a urinary tract infection. A urinary tract infection may occur when the bacteria enter the urinary system through the bloodstream or via skin contact of the urethra with bacteria during urination.he results of a urinalysis identify and verify a number of different parameters, and nitrites in urine is one of them. Nitrites in urine is a condition that is different from nitrates in urine. The content of nitrates in urine is quite low.
Overall, the sensitivity of the urine dipstick test for nitrites in testing for a UTI has been found to be low (45-60% in most situations) with higher levels of specificity (85-98%). The test for nitrites has its highest accuracy in specific populations such as pregnant women, urology patients and elderly people. Ketones are not normally found in urine. 2  Dipstick tests for the presence of acetoacetic acid at 5-10 mg/dL but not acetone or beta-hydroxybutyric acid. 3  A positive test is associated with uncontrolled diabetes, pregnancy without diabetes, carbohydrate-free diets and starvation.