Normal UA
The normal yellow color of urine is produced by?
Urochrome
Reagent strip reaction based on blood is based on?
The psuedoperoxidase activity of hgb
clinitest is used to test for?
All reducing sugars
What would these results indicate?
color/clarity: yellow/hazy
PH-8.0
glucose-neg
protein- trace
ketone- neg
bilirubin- neg
urobilinogen-normal
blood- neg
nitrite- pos
leukocyte- pos
UTI
An amber colored specimen produces a yellow foam when shaken would be suspected to have?
Billirubin
The normal S.G. range is?
1.002-1.035
The principal reaction of bilirubin is based on?
Diazo reaction
bilirubin is coupled with a diazonium salt to form a colored complex
reagent strip reactivity should be tested when and with what?
every 24 hours
when a new lot of strips are opened
positive and negative QC
A patient who has been on a medical fast for several weeks has brought in a urine sample. How would you expect it to smell? and what would likely be positive on the dipstick?
Sweet/fruity/positive for ketones
A specimen that has intact red blood cells will appear?
Cloudy & red
4.5-8.0
The principal reaction for nitrites is based on?
Griess reaction
nitrite at an acidic PH reacts with an aromatic amine to produce a diazonium salt
The test performed to confirm a positive bilirubin on the reagent strip is the
Ictotest
The technician receives the following results on a urine specimen from a 1-month-old patient. What additional testing, if any, is required?
Color: Pale yellow
Clarity: Clear Sp. Gr. 1.015
pH 6.0
Blood: Negative
Protein: Negative
LE: Negative
Nitrite: Negative
Glucose: Negative
Ketones: Negative
Bilirubin: Negative
Urobilinogen: 1.0 EU
Microscopic: 0-1 WBCs
clinitest
a baby's urine has a mousy odor what is the most likely reason for this?
PKU (phenylketonuria)
Urobilinogen
The reagent reaction for glucose is based on?
double sequential enzyme reaction.
glucose oxidase/peroxidase
What should be done if pads on the reagent strips are discolored?
They should be discarded because they have been compromised
The technician performs a UA and a copper reduction test on a 19-month-old child. The reagent strip shows a negative result for glucose; the copper reduction test produces a positive result. What sugar is most likely present in the urine?
Galactose
A urine sample has a large amount of white foam when shaken and the foam does not dissipate quickly will likely contain?
Protein
What is the correct procedure for performing a chemical exam of a urine specimen?
Test a well mixed room temp specimen
The principle of the "protein error of indicators" is based upon?
protein accepting hydrogen ions from the indicator dye resulting in color change.
Confirmatory test for protein in urine is?
SSA
Urine bilirubin would be positive and urine urobilinogen would be normal to decreased in what clinical disorder?
Bile duct obstruction
what pigment is responsible for the pink color of amorphous urates?
Uroerythrin