EXAM 1 Flashcards
Boric Acid
Preserves formed elements but interferes with pH reading, used to preserve urine for culture and sensitivity testing.
Chloroform
inhibits bacterial growth, causes changes in characteristics of cellular sediment, may be used in aldosterone testing.
Chlorhexidine
Inhibits bacterial growth, useful glucose preservative, stable for 72 hours, must be protected from light (affects bilirubin and urobilinogen)
Formalin
Preserves urinary sediment, and may precipitate protein and give a false-positive result for reducing substances.
Preservative tablets
Release formaldehyde, interferes with reducing substance at high concentration, increase specific gravity.
Toulene
Preserves ketones, proteins, and reducing substances. Not effective against bacteria present. Floats on the surface o urine and is flammable.
Thymol
rarely used, interferes with acid precipitation test fr protein but not reagent strip test.
Polyuria
Is when there is an excessive amount of urine at >3L/day
Nocturia
> 500ml of urine at night
Oliguria
<400ml of urine a day
Anuria
No urine output
Urochrome
Is a lipid soluble pigment that gives urine its characteristic color
Urobilin
Produces an orange/brown color
Uroerythrin
produces a pink color.
Clinitest
Detection of reducing substances
Ictotest
Detection of bilirubin
Acetest
Detection of Ketones