Urinalysis Flashcards
which urine is the most concentrated?
the morning
which urine type is best to avoid contamination
catherized and suprapubic aspiration
what happens to the pH when urine is older then 2 hours?
pH elevates (becomes more alkaline)
what happens to the glucose when urine is older then 2 hours?
decreases (consommation by bacteria)
What is the principle of the pH test?
double indicator
What is the principle of the protéine test?
indicator d’erreur
What is the principle of the glucose test?
oxidase/peroxidase
What is the principle of the cetones test?
sodium nitroprusside
What is the principle of the blood test?
pseudoperoxidase, activity of hgb
What is the principle of the bilirubin test?
diazo reaction
What is the principle of the urobilinogen test?
ehrlich aldehyde reaction or diazo reaction
What is the principle of the nitrite test?
Greiss reaction
What is the principle of the leucocyte test?
leuco esterase
What is the principle of the specific gravity test?
pKa change of polyelectrolyte
what does it mean to have protein in the urine?
possible renal disease
What happens if you dont remove the excess urine on strip?
runover of chemicals to other pads
What happens if you leave the strips too long in the urine?
false negative reaction
what can cause a false positive for specific gravity?
protein
what type of alb is measured in urine?
microalbumine
Clinitest method
copper reduction
test to mesure bence jones?
SSA sulfosalicylic acid
test to mesure ketones
acetest
What is the acetest method
sodium nitroprusside reaction
test to mesure bilirubine
ictotest
ictotest method
diazo
if the substance is + glucose reagent strip and + clinitest what is it?
glucose
if the substance is - glucose reagent strip and + clinitest what is it?
non-glucose reducing substance
glitter cell (paillettes) =
WBC with brownian movement of granules
which amorphous is in acid urine?
urate
which amorphous is in alcalose urine?
phosphate
Uric acid is found in which ph?
acide
calcium oxalate is found in which ph?
acide
Which crystal we can use a polarized light?
uric crystals
which crystals are birefringent?
uric crystals and cholesterol
which amorphous is pink?
urates
which amorphous is white?
phosphate
which forms can oxalate take?
enveloppe. dumbell and ovoid
which crystals looks like rosettes?
calcium phosphate
how to differentiate calcium oxalate and calcium carbonate when if they are both dumbell shape?
oxalate in acide urine and carbonate in alkaline urine
name crystals in alkaline urine?
amourphous phosphate, triple phosphate, ammonium biurate, calcium carbonate, calcium phosphate
name of crystals in acide urine?
amorphous urates, uric acid, calcium oxalate, leucine, tyrosine, cystine
Which crystal can be seen in cystinuria?
cystine
which crystals can be seen in severe liver disease?
leucine and tyrosine
which crystals can be seen in nephrotic syndrome?
cholesterol
which protein is in hyalin?
tamm-horsefall
which form of cast is known to be the most advanced? the worst to have?
waxy
What form of yeast can you find in urine?
bud or pseudohyphae
how to you differentiate RBC and yeast?
add 2% acetic acid , RBC will lyse and yeast will be left
What resembles a WBC but has a flagella and moves in a jerky way?
trichomonas (parasite) common in females
What is the significance of mucus?
none
what cause a acute glomerulonephritis?
inflammation/dommage of the glomérule
what cause a nephrotic syndrome?
augmentation perméabilité gomulaire
what cause a pyelonephritis?
infection des reins
what cause a cystitis?
infection du vessie
what can you find in a acute glomerulonephritis urine?
RBC, WBC and rbc cast
what can you find in a nephrotic syndrome urine?
all kinds of cast and oval fat bodies
what can you find in a pyelonephritis urine?
WBC, WBC cast and bacteria
what can you find in a cystitis urine?
no cast, WBC, bacteria, RBC
which untreated bacteria can cause acute glomerulonephritis?
group A strep can cause inflammation/dommage to the glomérule
protéine dans l’urine indique quoi?
maladie rénale
what should you verify in the urine if the protein strip is positive?
cast
What does bilirubin in urine mean?
hepatique or obstruction disorder
protéine et glucose dans l’urine indique quoi?
dommage des reins du au diabète mellitus