Lab assessment of Kidney Disease Flashcards
Pathologic cause of Pink urine
Urates
Orange urine is indicative of
Bile pigments
Pyridium (drugs/food)
Psychoactive drugs, diuretics can turn urine into what color
Green
Rifampicin, Beets, Blacberries, Rhubarb can turn urine into what color
Red
T or F: Nitrofurans and diuretics can turn urine into brown color
False, Blue
Cloudy urine indicates
Crystallization/precipitation of urates in acidic urine or phosphates in alkaline urine
Fruity odor urine indicates
Ketosis
if there’s urinary fistula with the bowel the odor of the urine is
Fecal
(+) foam in the urine indicates
Proteinuria or billirubinuria
Conditions that may cause an increase in specific gravity in the urine
Dehydration
SIADH
Glycosuria
Proteinuria
Normal urine PH
5.5-6.5 sa notes
Acidic urine indicates
Ketosis Febrile illness Hypokalemia High protein diet Respiratory acidosis Metabolic acidosis Acidication therapy UTI
Glycosuria without high blood sugar is present in
Renal tubular dysfunction
Pregnancy
False positive for ketones
Ascorbic acid
Acidic urine
Concentrated urine
Urine test to indicate presence of bilirubin and urobilinogen
Foucher’s test
T or F: Dipstick urinalysis combining leukocyte esterase and nitrite testing is an effective and appropriate screening for UTI.
True
Vegetarian diet can result to false negative in test for
Nitrites
Prolonged urine sample can result to false positive in test for
Leukocyte esterase
Management If patient is positive in both leukoesterase and nitrate
Start antibiotics, this is UTI
Management If px is (+) for nitrate and (-) for Leukoestarse
Start antibiotics and send for culture
Management if px is (+) for Leuko and (-) for nitrite
Send for microscopy and culture, don’t start antibiotics unless there’s good clinical evidence of UTI
Management If neg for both Leuko and Nitrite
NOT UTI, no need for antibiotcs and sample should not be sent for culture
T or F: Random urine sample can be used for nitrite test
False should be first morning urine