KIDNEY FUNCTION TEST part 5 Flashcards
What is the reagent used in Phophotungstic Acid (PTA) or Caraway method?
Phophotungstic Acid (PTA)
This substance is used to increase color and inhibit fading but considered to be hazardous?
Sodium Cyanide
What could be the alternative of Sodium cyanide?
Sodium Carbonate
If Sodium Carbonate is used, it is adjusted to what pH?
10.0 - 10.4
What is the positive result of PTA?
Tungsten blue
Tungsten blue is measured at what wavelength?
660 - 700 nm
What substances can lead to falsely elevated results?
Aspirin
Acetaminophen
Caffeine
Theophylline
This method determines the decrease in the UA concentration.
Blaunch and Koch (UV test with Uricase)
What happens in the first step of Blaunch and Koch (UV test with Uricase)?
Uricase converts UA to Allantoin and Hydrogen peroxide
What happens in the second step of Blaunch and Koch (UV test with Uricase)?
UA absorbs light at 285 nm.
What is the mode of reaction of Blaunch and Koch (UV test with Uricase)?
Decreasing
What is the relationship of decreased in absorbance in UV method to concentration of the UA?
Proportional
DHBS stands for?
Dihydroxy benzene sulfonate
This makes the product a yellow lutidine
Acetylacetone
This makes the product a tinder pink compound.
PAP