Urinalysis - Changes in Unpreserved Urine at Room Temperature > 2 Hours Flashcards
1
Q
Change in turbidity
A
increased
2
Q
Cause of increased turbidity
A
-multiplication of bacteria
-precipitation of amorphous crystals
3
Q
Change in pH
A
increased
4
Q
Cause of increased pH
A
conversion of urea to ammonia by bacteria
5
Q
Change in glucose
A
decreased
6
Q
Cause of decreased glucose
A
metabolism by bacteria
7
Q
Change in ketones
A
decreased
8
Q
Cause of decreased ketones
A
-volatilization of acetone
-breakdown of acetoacetate by bacteria
9
Q
Change in bilirubin
A
decreased
10
Q
Cause of decreased bilirbuin
A
oxidation to biliverdin
11
Q
Change in urobilinogen
A
decreased
12
Q
Cause of decreased urobilinogen
A
oxidation to urobilin
13
Q
Change in WBCs, RBCs, and casts
A
decreased
14
Q
Cause of decreased WBCs, RBCs, and casts
A
lysis in dilute or alkaline urine
